Abbasi, S.A. Modelling and simulation of biogas systems economics / S. A. Abbasi and P. C. Nipaney. - New Delhi : Ashish publishing house, c 1993. - 359 p. : ill. ; 23 cm. Bibliography : 355-359 p. 320 320 ISBN: 81-7024-533-8 Subjects--Topical Terms: Industrial oils, fats, waxes & gases Dewey Class. No.: 665.73 / A12m