TY  - BOOK
ED  - Southwest Architectural Designing Institute
TI  - Collection of simple biogas digester designs
U1  - 665.776 
PY  - 1980///
CY  - Sichuan
PB  - Southwest Architectural Desiging Institute
KW  - Biodigestores
KW  - Biogas
N1  - Fotocopia; 06606
ER  -