TY  - GEN
AU  - Das Gupta D K, Chattopadhyay N C
TI  - HIgher productivity in agriculture: proceedings of the national synposium on approach to higher productivity of crops held at the Ramakrishna mission institute of culture, Calcutta during May, 19-20,1978
U1  - 631.53 DAS 
CY  - Newdelhi, Oxford & IBH publishing company
KW  - Crop productivity-INdia-congresses
ER  -