00324nam a2200133Ia 450000500170000008000180001724500440003526000270007930000110010650000250011758300190014294200120016199900170017320260716043017.0  a08.11.06 U58u  aUpdated guidebook on biogas development  bU.N.aNew YorkUSc1984  a178 p.  aBibliography: p. 178  c3/7/00kM2LMGR  cMmU58u  c38654d38654