TY  - BOOK
AU  - Tisdale, Samuel. L
AU  - Nelson, Werner. L
TI  - Soil Fertility and Fertilizers
U1  - 631.8 
PY  - 1969///
CY  - London
PB  - The Macmillan Company
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Soil fertility
ER  -