> Multivolume work
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Proceedings and papers of the 1st International Congress of Soil Science, June 13 - 22, 1927, Washington, D.C., U.S.A. Vol. 1 Part I. proceedings, part II. commission I ed. under the supervision of the Executive Committee of the American Organizing Committee by R. B. Deemer, assisted by P. R. Dawson and A. R. Merz
Washington, DC: American Organizing Committee, 1928
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Proceedings and papers of the 1st International Congress of Soil Science, June 13 - 22, 1927, Washington, D.C., U.S.A. Vol. 4 Commission V, commission VI, miscellaneous papers ed. under the supervision of the Executive Committee of the American Organizing Committee by R. B. Deemer, assisted by P. R. Dawson and A. R. Merz
Washington, DC: American Organizing Committee, 1928