Strength of materials, part I, elementar
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R.H. Oppermann
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Article
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1941
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Elsevier Science
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English
โ 66 KB
The book is not only of interest to horologists and electricians, but to a far wider circle since it describes the life work of one who has been completely interested in securing perfection in time-keeping and who has had a high degree of success in attaining his ambition.