000 00286nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aMathur & Rathur
245 0 _aBiogas production management and utilization
260 _bNil
260 _c2005
365 _b495.00
942 _cBK
999 _c147447
_d147447