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A method of coding chemicals for correlation and classification.
出版社：Washington : Chemical-Biological Coordination Center-National Research Council, 1950.
出版年：1950
资源类型：图书
细分类型：西文文献
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Classification.
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The ferns (Filicales) : treated comparatively with a view to their natural classification.
  • 作者：Bower,Frederick Orpen
  • 出版社：Cambridge : At The University Press, 1926.,Cambridge : At The University Press, 1928.
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Outline of plant classification.
  • 作者：Holmes,Sandra.
  • ISBN：0582446503
  • 出版社：London : Longman, 1986.
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International patent classification.
  • 作者：World Intellectual Property Organization.
  • 出版社：[Geneva, Switzerland] : World Intellectual Property Organization ; München : C. Heymanns Verlag, 19
  • 出版年：1979
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International patent classification.
  • 作者：World Intellectual Property Organization.
  • ISBN：Y3.30
  • 出版社：[Geneva, Switzerland] : World Intellectual Property Organization ; München : C. Heymanns Verlag, 19
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Index to classification.
  • 作者：United States Department of Commerce.
  • 出版社：Wash. : Govt. Print. Off., 1960.,Wash. : U.S. Govt. Print. Off., 1963.
  • 出版年：1963