TY  - BOOK
AU  - Maramba, Felix D.
TI  - Sludge as fertilizer
KW  - Biogas
KW  - Estiércol
KW  - Fertilizantes
N1  - Sobretiro de: Maramba, D.F. Biogas and waste recycling: the philippine experience. 1978: 152-168
ER  -