TY  - BOOK
AU  - x, Havlin, John L
AU  - x
TI  - Soil fertility and fertilizers: x
SN  - 0136268064
U1  - 631.81/S683 
PY  - 1991///
CY  - New Jersey
PB  - Prentice Hall
KW  - Fertilizers
KW  - Soil fertility
N1  - Includes
ER  -