Gu Jian2007-11-121985-04-012007-11-121985http://hdl.handle.net/10625/8123Includes appendix: Biogas, ecocycle and environmental protectionRelated to DAP 87-4249 under which IDRC supported the WCED to acquire and duplicate original papers, submissions, tapes and transcripts, became the depository of all original archival materials and received the right to microfiche the collection for broader disseminationText23 p.Application/pdfenBIOGASRURAL AREASCHINAECONOMIC ASPECTSENERGY POLICYENVIRONMENTAL PROTECTIONENERGY CONSERVATIONConference Paper