TY  - BOOK
AU  - Frevert, Richard K.,
AU  - Schwab, Glenn O.
TI  - Soil and water conservation engineering
SN  - 0471030783
AV  - S623 F68 1981
PY  - 1981///
CY  - New York
PB  - Wiley
KW  - Conservación del agua
KW  - Conservación de suelos
N1  - Previous 2 editions published in 1955 and 1966 entered under r. k. frevert
ER  -