000 00314nam a2200133Ia 4500
082 _a637.2/CHA
100 _aChawla, O P
245 _aAdvances in biogas technology
260 _bIndian Council of Agricultural Research
_aNew Delhi
_c1986
300 _a144
650 _aBiogas
901 _a2597
942 _2ddc
_cBK
999 _c2273
_d2273