TY  - BOOK
ED  - American Society of Agricultural Engineers
TI  - Livestock waste management and pollution abatement; proceedings
U1  - 658.567 
PY  - 1971///
CY  - St. Joseph, Mich.
KW  - Estiércol
KW  - Manejo
KW  - Medio ambiente
KW  - Contaminación
ER  -