2019 http://localhost:8080/xmlui/handle/123456789/986 Mon, 13 Apr 2026 11:08:59 GMT 2026-04-13T11:08:59Z Mechanics (Reappear) http://localhost:8080/xmlui/handle/123456789/1041 Mechanics (Reappear) Sun, 01 Dec 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/1041 2019-12-01T00:00:00Z Operations research http://localhost:8080/xmlui/handle/123456789/992 Operations research Sun, 01 Dec 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/992 2019-12-01T00:00:00Z Partial differential equation http://localhost:8080/xmlui/handle/123456789/988 Partial differential equation Sun, 01 Dec 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/988 2019-12-01T00:00:00Z Topology http://localhost:8080/xmlui/handle/123456789/987 Topology Sun, 01 Dec 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/987 2019-12-01T00:00:00Z