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Authors
- Massachusetts. Department of Education, author, issuing body.1
- Massachusetts. Department of Public Health, author, issuing body.1
- Mayo Aero Medical Unit, author.7
- McIntosh, William A. (William Alexander), 1890- author1
- Meeting of the Temporary Continuation Committee of the Conference on Inter-American Relations in the Field of Education (1940 : Washington, D.C.), author.1
- Mercer, Carolyn Morton, author1
- Morrison, A. B., (Of Ohio. Department of Health. Adult Hygiene Division) author1