TY  - BOOK
AU  - Bajwa, M. S.
AU  - Randhawa, N. S.
AU  - Singh, Avtar
TI  - Soil fertility and fertilizer use in Ludhiana district
U1  - 631.4 
PY  - 1974///
CY  - Ludhiana
PB  - Punjab Agricultural University
KW  - Soil fertility
KW  - Fertiliser industry - India
ER  -