1.
図書 |
by H.K. Dean ; with a foreword by T.P. Hilditch
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2.
図書 |
by C. Falconer Flint ; with a foreword by B.J. Eaton
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3.
図書 |
bearbeitet von A. Tschirch und Erich Stock
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4.
図書 |
by M. Nierenstein
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5.
図書 |
by William A. Rooker ; including a chapter on patents on the manufacture and use of pectin by Milo R. Daughters
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6.
図書 |
von Walther Schrauth
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7.
図書 |
von Ernst A. Hauser ; mit einem Anhang, Patentübersicht bearbeitet von Carl Boehm von Boernegg
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8.
図書 |
bearbeitet von Karl Braun
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9.
図書 |
by B.D.W. Luff
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10.
図書 |
par M.P. Otto
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