TY  - BOOK
AU  - Knuti, Leo L.
AU  - Hide, J. C.
AU  - Williams, David L.
TI  - Profitable soil management
T2  - Vocational agricultural series
U1  - 631.4 
PY  - 1979///
CY  - Englewood Clifss, N. J.
PB  - Prentice-Hall
KW  - Suelos
KW  - Conservación
ER  -