00385nam a2200133Ia 4500008004100000020001800041040002900059050002200088100002100110245004900131260004900180942000700229999001500236230107s9999||||xx |||||||||||||| ||und||  a0-8403-4657-3  cChuka University Library  aG 1021 bC47 1991  aChristensen, J.W 0aGlobal science: energy resources,environment  aKendall hunt publisherbWestmark drivec1991  cBK  c8779d8779