TY  - BOOK
AU  - Collings, Gilbeart H.
TI  - Commercial Fertilizers : their sources and use / : by Gilbeart H. Collings
U1  - 631.8 
PY  - 1955///
CY  - .- Bombay
PB  - Tata McGraw-Hill Publishing
KW  - Technology (Applied Sciences)
KW  - Agriculture and Related Technologies
KW  - Fertilizers
ER  -