Biogas technology, transfer and diffusion. London etc.: 1986 XV, 720 p. : ill., tab.
Biogas technology, transfer and diffusion. London etc.: 1986 XV, 720 p. : ill., tab.
(1986) Biogas technology, transfer and diffusion, London etc.: XV, 720 p. : ill., tab.
(1986). Biogas technology, transfer and diffusion. Proc. of the Internat. Conference held at the Netional Research Center Cairo, Egypt 17-24 November 1984. London etc.: XV, 720 p. : ill., tab.
Biogas technology, transfer and diffusion: Proc. of the Internat. Conference held at the Netional Research Center Cairo, Egypt 17-24 November 1984. London etc.: 1986. p. XV, 720 p. : ill., tab.