TY  - BOOK
AU  - Hays,William L.
TI  - Quantification in psychology
T2  - Basic concepts in psychology series
U1  - 152.8 
PY  - 1967/// [1969]
CY  - New Delhi
PB  - Prentice-Hall Pvt. ltd.
KW  - Psychometrics
N1  - Bibliography: p. 83. and index
ER  -