http://127.0.0.1/xmlui/handle/123456789/1934 Fri, 17 Apr 2026 02:35:55 GMT 2026-04-17T02:35:55Z http://127.0.0.1/xmlui/handle/123456789/1935 Electro - Mechanical Interaction in Piezo - Electric Crystals Paul, H. S. Mon, 01 Jan 1962 00:00:00 GMT http://127.0.0.1/xmlui/handle/123456789/1935 1962-01-01T00:00:00Z