00980cam a2200229 i 450000500170000000800410001701000170005802000150007504000230009005000230011308200210013611100940015724502230025126000400047430000420051450400410055665000220059765000390061965000310065865000420068970000190073120241112121710.0180418s1979    nyu      b    101 0 eng    a   78026238   a0080238637  aDLCcDLCdBD-DhBPA00aTN799.9b.I63 197800a333.82bECO 19792 aInternational Congress for Energy and the Ecosystemd(1978 :cUniversity of North Dakota)10aEcology and coal resource development :bbased on the International Congress for Energy and the Ecosystem, held at the University of North Dakota, Grand Forks, North Dakota, 12-16 June, 1978 /cedited by Mohan K. Wali.  aNew York :bPergamon Press,cc1979.  a2 v. (xiv, 1091 p.) :bill. ;c25 cm.  aIncludes bibliographies and indexes. 0aCoalxCongresses. 0aCoal mines and miningxCongresses. 0aEnergy policyxCongresses. 0aEnvironmental protectionxCongresses.1 aWali, Mohan K.