00317nam a2200121Ia 4500008004100000020001500041041001200056100001600068245006200084260003100146300000800177650001000185221030s9999    xx            000 0 und d  a8174767295  aEnglish  aB. N. Dutta 0aEstimating & Costing in Civil Engineeringcby B. N. Dutta  bLIBS Pub.aNew Delhic2013  a904  aCivil