00369nam a2200133Ia 450000500170000008000180001710000260003524500700006126000410013130000150017258300190018794200120020699900170021820260716043032.0  a08.11.16 G976  aGunnerson, Charles G.  aAnaerobic digestion : principles and practices for biogas systems  bWorld BankaWashington, D.C.USc1986  axv, 154 p.  c3/7/00kM2LMGR  cMmG976  c39099d39099