Introduction to Nonp ...
K. Sijtsma, Kla ...
Our Price: £ 136.36
Test Item Bias
Steven J. Oster ...
Our Price: £ 46.78
Polytomous Item Resp ...
Remo Ostini, Mi ...
Our Price: £ 37.16
Fundamentals of Item ...
Ronald K. Hambl ...
Our Price: £ 91.47