TY  - BOOK
AU  - Havlin, John L
TI  - Soil fertility and fertilizers : an introduction to nutrient management 
SN  - 978-0-13-503373-9
AV  - S 633 .S715 2013 4864
PY  - 2013///
CY  - Boston 
PB  - Pearson 
KW  - 1. Fertilizers 2. Soil fertility 3. Crops- nutrition
N1  - Includes index
ER  -