TY  - BOOK
AU  - Madan, S.P.S.
TI  - Study on the effect of various doses of nitrogen, phosphorus and size of onion bulb on seed production of onions (Allium cepa)
U1  - T 635.25 M26S 
PY  - 1964///
CY  - Ludhiana
PB  - PAU
ER  -