TY  - BOOK
AU  - De, Dipak
AU  - Rao, Mandava Srinivas
TI  - Techniques of theory building
SN  - 8185694311
U1  - 378.17501 21st ed.
PY  - 2000///
CY  - Varanasi
PB  - Ganga Kaveri Publishing  House
KW  - Educational  theory
KW  - Extension  education
KW  - Theory
ER  -