TY  - BOOK
AU  - National council of educational research and traning (New Delhi)
ED  - National council of educational research and traning (New Delhi)
TI  - Social studies :  A textbook or secondary schools ed by K S Yajnik etc
U1  - Y1, K9.1 
PY  - 1969///
CY  - NA
PB  - NA       
KW  - SOCIOLOGY
ER  -