000 00272nam a2200109Ia 4500
008 220201s1960 xx 000 0 eng d
100 _aConmolly, WH
245 0 _aDesign of prestresed concrete beams
260 _bN. Dodge Corporation
_c1960
300 _a252
942 _2ddc
999 _c72501
_d72501