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  1. 1

    Official methods of analysis of the Association of Official Agricultural Chemists /

    Published 1955
    Book
  2. 2

    Official methods of analysis of the Association of Official Analytical Chemists /

    Published 1990
    Book
  3. 3

    Official methods of analysis of the Association of Official Analytical Chemists /

    Published 1980
    Book
  4. 4

    Official methods of analysis of the Association of Official Agricultural Chemists /

    Published 1965
    Book