00275nam a2200097Ia 4500008004100000082001900041100002100060245005300081260003400134300000900168210430s9999    xx            000 0 und d  a620.11 G9775 M  aDr.Aparna Gulpat  aMaterial Science for EngineerscDr.Aparna Gulpat  aNew DelhibSatish kumarc2008  a534p