Biogas technology, transfer, and diffusion : proceedings of the international conference held at the National Research Centre, Cairo, Egypt, 17-24 November 1984 on biogas technology, transfer, and diffusion / edited by M.M. El-Halwa-gi. El-Halwagi, M. M. International Conference on the State of the Art on Biogas Technology, Transfer, and Diffusion (1984 : Cairo, Egypt) Biogas Congresses. TP359.B48 B565 1984 665.776 19 ELB Includes bibliographies and index. London ; New York : Elsevier Applied Science Publishers : Sole distributor in the USA and Canada, Elsevier Pub. Co., c1986. c1986. 1986 Text xv, 720 p. : eng