Vogt, F. Energy conservation and use of renewable energies in the bioíndustries; proceedings of the International Seminar on Energy... - Oxford : Pergamon Press, 1981 - 574 p. : ilus. ; gráfs. LCCN: 50780 Subjects--Topical Terms: Biogas.Biomasa.Energía solar en agricultura. Dewey Class. No.: 631.371 / V6