000 00299nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a578:543.27 M6
100 _a"Chawla, O.P."
245 _aAdvances in Biogas technology
260 _a1986
_bI.C.A.R.
_cNew Delhi
300 _a144
942 _cBK
999 _c60998
_d60998