Proceedings of the Sixth Annual Convention of the Association of Official Agricultural Chemists, Held at the U. S. Department of Agriculture September 10, 11, and 12, 1889: Methods of Analysis of Commercial Fertilizers, Cattle Foods, Dairy Products, and F
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Proceedings of the Sixth Annual Convention of the Association of Official Agricultural Chemists, Held at the U. S. Department of Agriculture September 10, 11, and 12, 1889: Methods of Analysis of Commercial Fertilizers, Cattle Foods, Dairy Products, and F
