TY  - BOOK
AU  -  Ley P.
TI  - Quantitative aspects of psychological assessment: an introduction
U1  - 152.8 
PY  - 1972///
CY  - London
PB  - Duckworth
KW  - Psychometrics
KW  - Psychological tests
N2  -  Psychological tests, Psychometrics
ER  -