TY  - BOOK
AU  - Tripathi, Virendra
AU  - Singh, V.N.
TI  - Preparation of Problem-Oriented Learning Materials
U1  - 374 
PY  - 1976///
CY  - New Delhi
PB  - Indian Adult Education Association
KW  - Education
KW  - Social sciences
KW  - Adult education
ER  -