TY  - BOOK
AU  - Thompson, Louis M.
AU  - Troeh, Frederick R.
TI  - Soils and fertility
U1  - 631.42  
PY  - 1975///
CY  - New Delhi
PB  - McGraww Hills 
KW  - Agriculture and Related Technologies | Technology (Applied sciences) | Soil Fertility | Soils
ER  -