Vogt. (1981). Energy conservation and use of renewable energies in the bio-industries: Proceedings of the International Seminar on Energy Conservation and the Use of Solar and Other Renewable Energies in Agriculture, Horticulture, and Fishculture, held at the Polytechnic of Central London, 15-19 September 1980. Oxford: Pergamon Press.

Vogt. Energy Conservation and Use of Renewable Energies in the Bio-industries: Proceedings of the International Seminar On Energy Conservation and the Use of Solar and Other Renewable Energies in Agriculture, Horticulture, and Fishculture, Held At the Polytechnic of Central London, 15-19 September 1980. Oxford: Pergamon Press, 1981.

Vogt. Energy Conservation and Use of Renewable Energies in the Bio-industries: Proceedings of the International Seminar On Energy Conservation and the Use of Solar and Other Renewable Energies in Agriculture, Horticulture, and Fishculture, Held At the Polytechnic of Central London, 15-19 September 1980. Oxford: Pergamon Press, 1981.