00436    a2200157   4500020001800000082001700018100002200035245003400057260005300091300001600144650003500160650001600195650003500211650001100246700002100257  a9788183211314  a665.776bSHI  aShilpkar, Prateek  aHandbook of biogas technology  aUdaipurbAgrotech publishing academyc2009g2009  a400p.c22cm  aTechnology of industrial gases  aNatural gas  aProduction of manufactured gas  aBiogas  aShilpkar, Deepti