00334nam a2200133Ia 4500008004100000020001500041041001200056100001700068245004000085250000800125260004900133300000800182650001000190221030s9999    xx            000 0 und d  a8122433791  aEnglish  aS. K. Duggal 0aBuilding Materialscby S. K. Duggal  a4th  bNew  Age International Pub.aNew Delhic2015  a594  aCivil