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020 _a9788122413809
040 _aLC
_bENG
_cLC
050 _aTP 359.B48
_bN 32
100 _qB. T. Nijaguna
245 _aBiogas Technology
260 _aLondon
_bNew Age International Publishers
300 _a287
856 _3Book
942 _2lcc
_cBK
999 _c22402
_d22402