TY  - BOOK
AU  - Gilbeart H. Collings
TI  - Commercial fertilizers : Their sources and use. Ed 5
U1  - 631.8 
PY  - 1955///
CY  - New York
PB  - Mc Graw Hill Book Co. Inc
N1  - Gilbeart H. Collings: Commercial fertilizers : Their sources and use. Ed 5.  (5th Edition)  New York.  Mc Graw Hill Book Co. Inc, 1955.--(631.8COL)
ER  -