TY  - BOOK
AU  - Hambleton,Ronald K.
AU  - Swaminathan,Hariharan
TI  - Item response theory: principles and applications 
SN  - 0898380650 :
U1  - 150.287 
PY  - 1985///
CY  - Boston
PB  - Kluwer- Nijhoff Pub.
KW  - Item response theory
N1  - Includes index
ER  -