http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/164 Sun, 05 Apr 2026 16:39:10 GMT 2026-04-05T16:39:10Z http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/2509 ENVIRONMENTAL SCIENCE Wed, 11 Feb 2026 00:00:00 GMT http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/2509 2026-02-11T00:00:00Z http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/2310 ENVIRONMENTAL SCIENCE Fri, 12 Sep 2025 00:00:00 GMT http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/2310 2025-09-12T00:00:00Z http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/2051 ENVIRONMENTAL SCIENCE Thu, 13 Mar 2025 00:00:00 GMT http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/2051 2025-03-13T00:00:00Z http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/1871 ENVIRONMENTAL SCIENCE Tue, 23 Jul 2024 00:00:00 GMT http://elearn.psgcas.ac.in:8080/jspui/handle/123456789/1871 2024-07-23T00:00:00Z