000			00335nam a2200145Ia 4500
001			20285
008			230412s9999 xx 000 0 und d
100			_aLandsberg,Hans H.
245		0	_aEnergy:The Next Twenty Years
260			_aUSA
260			_bHarper and Row , Publishers, Inc.
260			_c1979
300			_a623
942			_cBK
999			_c11197 _d11197