TY  - BOOK
AU  - GURDEEP Kaur
TI  - Developmental patterns of formal operational thought in relation to age, sex and social class
U1  - T 155.5 G96D 
PY  - 1990///
CY  - Ludhiana
PB  - PAU
KW  - ADOLESCENT PSYCHOLOGY
KW  - THOUGHT AND THINKING
ER  -