TY  - GEN
AU  - Foth, henry d.
AU  - Ellis, Boyd G.
TI  - Soil fertility
SN  - 1566702437
U1  - 631.42 
PY  - 1997///
CY  - Boca Raton
PB  - CRC Press
KW  - Soil Fertility
KW  - Fertilizers
ER  -