Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 1-2) by Academy of Natural Philadelphia, 115434245X, 9781154342451 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 121) by Academy of Natural Philadelphia, 1154325202, 9781154325201 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 124-125) by Academy of Natural Philadelphia, 1154257002, 9781154257007 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 125-126) by Academy of Natural Philadelphia, 1153834499, 9781153834490 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 126-127) by Academy of Natural Philadelphia, 1154257045, 9781154257045 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 127) by Academy of Natural Philadelphia, 115429434X, 9781154294347 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 128-131) by Academy of Natural Philadelphia, 1154230732, 9781154230734 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 132-135) by Academy of Natural Philadelphia, 1154215423, 9781154215427 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 136-138) by Academy of Natural Philadelphia, 1154212017, 9781154212013 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 140) by Academy of Natural Philadelphia, 1154269647, 9781154269642 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 141) by Academy of Natural Philadelphia, 1154280551, 9781154280555 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 144-145) by Academy of Natural Philadelphia, 1154309509, 9781154309508 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 149-150) by Academy of Natural Philadelphia, 1154269620, 9781154269628 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 149-151) by Academy of Natural Philadelphia, 1154257118, 9781154257113 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 15-16) by Academy of Natural Philadelphia, 115426968X, 9781154269680 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 152-154) by Academy of Natural Philadelphia, 1153952009, 9781153952002 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 155) by Academy of Natural Philadelphia, 1153843676, 9781153843676 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 156) by Academy of Natural Philadelphia, 1153952025, 9781153952026 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 17) by Academy of Natural Philadelphia, 1154212025, 9781154212020 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 17) by Academy of Natural Philadelphia, 1154981215, 9781154981216 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 18 ) by Academy Of Natural Philadelphia, 123562823X, 9781235628238 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 18) by Academy of Natural Philadelphia, 1154257088, 9781154257083 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 19) by Academy of Natural Philadelphia, 1154021300, 9781154021301 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 19) by Academy of Natural Philadelphia, 1154981118, 9781154981117 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 20) by Academy of Natural Philadelphia, 1153252376, 9781153252379 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 20-21) by Academy of Natural Philadelphia, 1154269663, 9781154269666 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 23) by Academy of Natural Philadelphia, 115310265X, 9781153102650 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 24) by Academy of Natural Philadelphia, 1154191265, 9781154191264 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 27) by Academy of Natural Philadelphia, 115405683X, 9781154056839 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 29 ) by Academy Of Natural Philadelphia, 1235813258, 9781235813252 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 32) by Academy of Natural Philadelphia, 1153102684, 9781153102681 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 33) by Academy of Natural Philadelphia, 1154056775, 9781154056778 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 34) by Academy of Natural Philadelphia, 1150155507, 9781150155505 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 3-4) by Academy of Natural Philadelphia, 1154342492, 9781154342499 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 35) by Academy of Natural Philadelphia, 1154125475, 9781154125474 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 36) by Academy of Natural Philadelphia, 1154056813, 9781154056815 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 37 ) by Academy Of Natural Philadelphia, 123580979X, 9781235809798 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 37) by Academy of Natural Philadelphia, 1154342425, 9781154342420 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 37) by Academy of Natural Philadelphia, 1154981061, 9781154981063 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 39) by Academy of Natural Philadelphia, 1154981010, 9781154981018 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 39) by Academy of Natural Philadelphia, 1154359840, 9781154359848 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 4) by Academy of Natural Philadelphia, 1153531852, 9781153531856 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 40) by Academy of Natural Philadelphia, 1153843684, 9781153843683 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 43) by Academy of Natural Philadelphia, 115325901X, 9781153259019 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 45 ) by Academy Of Natural Philadelphia, 1235662829, 9781235662829 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 45; v. 45) by Academy of Natural Philadelphia, 1154125491, 9781154125498 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 46 ) by Academy Of Natural Philadelphia, 1235721833, 9781235721830 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 46) by Academy of Natural Philadelphia, 1154056759, 9781154056754 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 48 ) by Academy Of Natural Philadelphia, 123566273X, 9781235662737 Details

Proceedings of the Academy of Natural Sciences of Philadelphia (Volume 5) by Academy of Natural Philadelphia, 1154980960, 9781154980967 Details