000			00337nam a2200145Ia 4500
008			231217s9999 xx 000 0 und d
041			_aEnglish
082			_a333.7 _bSIE
100			_aScientific American
245		0	_aEnergy
260			_aSan Francisco _bW.H Freemsh _c1978
300			_a221
650			_aNatural Reources
942			_cBK
999			_c9772 _d9772