Evaluation of Drainable Porosity under Non-Steady Drainage in Sand Columns http://127.0.0.1/xmlui/handle/123456789/3061 Thu, 16 Apr 2026 16:54:49 GMT 2026-04-16T16:54:49Z Evaluation of Drainable Porosity under Non-Steady Drainage in Sand Columns http://127.0.0.1/xmlui/handle/123456789/3062 Evaluation of Drainable Porosity under Non-Steady Drainage in Sand Columns Rao, Bhavana Narasinga Sat, 01 Jan 1977 00:00:00 GMT http://127.0.0.1/xmlui/handle/123456789/3062 1977-01-01T00:00:00Z