Proceedings of the sixth annual Convention of the Association of Official Agricultural Chemists held - detaljert visning

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 fermented liquors

edited by Harvey W. Wiley , published by authority of the secretary of agriculture
Bok Engelsk 1890 Association of Official Agricultural Chemists