Industrial machinery in France and Belgium. Charles P. Wood. (U.S. Bur. of foreign and domestic commerce. Special agents ser. 204) 61p pa ’20
Malaria
What can a community afford to pay to rid itself of malaria? L. M. Fisher. (U.S. Public health service. Reprint 595) 7p pa ’20
Manganese
Manganese: uses, preparation, mining costs and the production of ferro-alloys. C. M. Weld and others. (U.S. Mines bureau. Bul. 173) 209p pa ’20
Manure
Handling farm manure. F. L. Duley. (Missouri. Agricultural experiment station. Bul. 166) 29p pa ’19 Columbia, Missouri
Marketing
Cooperative marketing. O. B. Jesness. (U.S. Agriculture dept. Farmers’ bul. 1144) 27p pa ’20
Marketing by federations. Theodore Macklin. (Wisconsin. Agricultural experiment sta. Bul. 322) 24p pa ’20 University of Wisconsin, Madison, Wis.