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Underwater heightmeter: A new handheld precision instrument for elevation measuring in underwater surveying |
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| Authors: | H C Botma Th J Maarleveld |
| Institution: | Institute of Applied Physics TNO-TH, P.O. Box 155, 2600 AD Delft, The Netherlands;Ministry of W.V.C, P.O. Box 5406, 2280 HK Rijswijk, The Netherlands |
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