TY  - BOOK
AU  - Engelhard George
TI  - Invariant measurement :  Using rasch models in the social, behavioral, and health sciences
SN  - 9780415871259 (pbk)
U1  - S:7:6, Q3 
PY  - 2013///
CY  - New York
PB  - Routledge U.S.A      
KW  - PSYCHOLOGY
ER  -