Biogas processes for sustainable development - Rome : FAO, 1992 - 232 p. : ilus. - FAO. Servicios agrÃcolas ; 95 . - FAO . - FAO. Servicios agrÃcolas ; 95 . LCCN: 7480 Subjects--Topical Terms: Biogas. Dewey Class. No.: 658.567 / F3