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| Utgitt
| Newcastle upon Tyne : North East Coast Institution of Engineers and Shipbuilders , 1972
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| Omfang
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| Opplysninger
| (Excerpt from the Institution Transactions Vol.88). - Delivered before the North East Coast Institution of Engineers and Shipbuilders, The University of Newcastle upon Tyne and the North of England Shipowners' Association in Newcastle upon Tyne on 21st February , 1972
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