000			00334nam a2200157Ia 4500
008			190201s9999 xx 000 0 und d
020			_a863411878
082			_a621
082			_b3815 G
100			_aHaigh D.
245		0	_aGaas Technology and Its
260			_aLondon
260			_bPeter Pere.
260			_c1983
300			_a451
999			_c37727 _d37727