Robert James McFall, Mordecai Ezekiel, Nils Andreas Olsen, Edmund E. Vial, G. E. Story, W. J. Tubbs, J. J. Vernon, William H. Fippin, Harold Newell Young, O. M. Reed, H. L. Forest, J. R. Hanson, Paul Laird Miller, United States. Bureau of Agricultural Economics, Vermont. Special Milk Investigational Committee, France. Ambassade (U.S.). Service d'analyse industrielle · First published 1917
