00246nam a2200097Ia 450000500170000000800410001710000190005824500280007726000350010530000080014020260413100422.0230516s9999||||xx |||||||||||||| ||und||  aGupta, Navneet 0aMaterial Science &Engg.  bDelhi, Dhanpat Rai &Sonsc2001  a634