TY  - BOOK
TI  - National demonstrations, 1965-1968
U1  - 371.315.3 ICAR 1965/68(047)   L1 
PY  - 1971///
CY  - New Delhi
PB  - ICAR
KW  - Field crops-Programmed Instruction,Intercropping-Programmed instruction
ER  -