000 00270nam a2200121Ia 4500
008 230401s2011 xx 000 0 eng d
082 _a624.1834
100 _aGUPTA B L
245 0 _aCONCRETE TECHNOLOGY
260 _bSTANDERED
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300 _a254
942 _2ddc
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999 _c476
_d476