00303nam a2200109Ia 4500008004100000020001800041082001500059100001500074245005200089260004200141300001000183210430s9999    xx            000 0 und d  a9788121903592  a660 D2131A  aDara, S.S. 2aA Textbook of Engineering ChemistrycDara, S.S.  aNew Dehli.bS. Chand & Company.c1986  a972p.