TY  - BOOK
AU  - De Groot Adriaan D
TI  - Methodology foundattion  of uinference and research in the behavioral sciences
T2  - physchologcal studiesed  by Johan T barendregt; 6
U1  - S.f, K9-;1 
PY  - 1969///
CY  - The
PB  - hague Mouton      
KW  - PSYCHOLOGY
ER  -