TY  - SER
AU  - Dua, K. L,
TI  - Journal of Research Vol. 25(2-3), 26(4), 30(1-4)
U1  - 630.5 
PY  - 1988///-93
CY  - Ludhiana
PB  - Punjab Agricultural University
KW  - Agriculture. & related technologies
ER  -