TY  - GEN
AU  - Troeh, Frederick R. 
AU  - Thompson, Louis M. 
TI  - Soils and soil fertility
SN  - 0195083288
U1  - 631.4 
PY  - 1993///
CY  - New york
PB  - Oxford University Press
KW  - SPECIFIC TECHNIQUES; APPARATUS, EQUIPMENTS, MATERIALS
KW  - SOIL SCIENCES
ER  -