ASEAN Seminar-Workshop on Biogas Technology (1st : 1981 : Manila) & ASEAN Committee on Science and Technology Working Group on Food Waste Materials. (1981). First ASEAN Seminar-Workshop on Biogas Technology, Manila, Philippines, 16-20 March 1981. [s.n.].
Cita Chicago (17th ed.)ASEAN Seminar-Workshop on Biogas Technology (1st : 1981 : Manila) i ASEAN Committee on Science and Technology Working Group on Food Waste Materials. First ASEAN Seminar-Workshop on Biogas Technology, Manila, Philippines, 16-20 March 1981. Manila: [s.n.], 1981.
Cita MLA (9th ed.)ASEAN Seminar-Workshop on Biogas Technology (1st : 1981 : Manila) i ASEAN Committee on Science and Technology Working Group on Food Waste Materials. First ASEAN Seminar-Workshop on Biogas Technology, Manila, Philippines, 16-20 March 1981. [s.n.], 1981.