TY - BOOK ED - Punjab Agricultural University. Department of Civil Engineering. College for Agricultural Engineering TI - National seminar on biogas technology July 9-11, 1981 U1 - 665.77 21st PY - 1981/// CY - Ludhiana PB - Punjab Agricultural University KW - Biogas; Biogas industry; Biomass chemicals N1 - Sponsored by UNDP/ICAR Centre for Advanced Studies in Post Graduate Agricultural Engineering Education and Research ER -