Bulletin - Bureau of Chemistry: Proceedings of the Twenty-Fourth Annual Convention of the Association of Official Agricultural Chemists, held at the Jamestown Exposition, Norfolk, VA: No. 116 (Hardcov

Bulletin - Bureau of Chemistry: Proceedings of the Twenty-Fourth Annual Convention of the Association of Official Agricultural Chemists, held at the Jamestown Exposition, Norfolk, VA: No. 116 (Hardcov