http://202.88.229.59:8080/xmlui/handle/123456789/972 Tue, 14 Apr 2026 19:59:11 GMT 2026-04-14T19:59:11Z http://202.88.229.59:8080/xmlui/handle/123456789/975 Introduction to Chemical Engineering Pushpavanam, S Sun, 01 Jan 2012 00:00:00 GMT http://202.88.229.59:8080/xmlui/handle/123456789/975 2012-01-01T00:00:00Z