TY  - BOOK
AU  - Ley, P;
TI  - Quantitative aspects of psychological assessment: an introducation
SN  - 0-7156-06018
U1  - 519.502415 LEY-Q 
PY  - 1972///
CY  - London
PB  - Gerald Duckworth
KW  - Psychometrics - Data Processing
KW  - Psychology - Mathematical Models
N1  - Includes index
ER  -