TY  - BOOK
AU  - Donahue, Roy Luther.
AU  - Follett, Roy M.
AU  - Tulloch, Rodney W.
TI  - Our soils and their management
U1  - 631.4 
PY  - 1976///
CY  - Denville, Ill.
PB  - Interstate
KW  - Suelos agrícolas
KW  - Suelos
ER  -