Methane digesters for fuel gas and fertilizer
Subtitle: with complete instructions for two working models.
Contributors: Fry, L. John.; Merrill, Richard.; Merrill, Yedida.; New Alchemy Institute.
Series: Newsletter / New Alchemy Institute -- No. 3; Newsletter -- No. 3.
Publisher: New Alchemy Institute, West
Published: 1973
Place of publication: Pescadero, Calif
Language: eng
Number of pages: 45
Notes: Inspiration: L. John Fry, Editors: Richard Merrill and Yedida Merrill.