00513nam a2200145Ia 450000500170000008000190001724500450003626000220008130000100010350000080011352001970012158300190031894200130033799900170035020260716043009.0  a08.11.06 B6155  aBiogas 2 : building a better biogas unit  bFAOaRomeITc1986  a47 p.  aIDS  aIllustrates and explains the steps to be taken in the construction of a small biogas unit.  Advises on the care of such a unit and briefly outlines steps for the construction of a bigger unit.  c3/7/00kM2LMGR  cMmB6155  c38422d38422