01028nam a2200265 a 450000100060000000300080000600500170001400800410003102000150007203500190008704000320010604100080013808200250014611100940017124502230026526000400048830000270052850400410055550500130059665000220060965000390063165000310067065000420070170000190074343673BD-RjUL20211209053732.0781109s1979    nyu      b    101 0 eng    a0080238637  a(BD-RjUL)43791  aDLCcDLCdDLCdBD-RjULbeng  aeng00223a333.82bECO 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.  aVol. :bill. ;c25 cm.  aIncludes bibliographies and indexes.0 aVol. 1-- 0aCoalxCongresses. 0aCoal mines and miningxCongresses. 0aEnergy policyxCongresses. 0aEnvironmental protectionxCongresses.1 aWali, Mohan K.