000			00349nam a2200157Ia 4500
001			4640
008			211022s9999 xx 000 0 und d
082			_a624.1834 HAA
100			_aHaas, A. M.
245		0	_aDesign of Thin Concrete Shells
260			_aNew York
260			_bJohn Willey and sons
260			_c1962
300			_a128
942			_cBK
999			_c7286 _d7287