TY  - BOOK
AU  - Thomposon, Louis. M
AU  - Troeh, Frederick. R
TI  - Soils and Soil Fertility
U1  - 631.8 
PY  - 1957///
CY  - New Yark
PB  - McGraw-Hill Book Company
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Soil fertility
ER  -