00337nam a2200121Ia 4500008004100000020001800041082001500059100001800074245002300092260005700115300001900172650002400191240817s9999    xx            000 0 und d  a9790000000000  a691 D879,b  aDuggal, S. K. 0aBuilding materials  c2012a New Delhib New Age Interenational Publishers  axviii,594p. p.  a Building materials