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Authors
- Maclean, Donald, M.D. author2
- Maclean, Lachlan, -18201
- Macouzet, Roque, author1
- Madden, Frank S., author1
- Madden, Henry R. (Henry Ridewood)1
- Maddock, Alfred Beaumont.1
- Madriz, Luis G., author1
- Magalhães, Fernando, 1878-19441
- Magaña, Ignacio, author1
- Magendie, François, 1783-18551
- Magnan, V. (Jacques Joseph Valentin), 1835-1916 author1
- Magruder, G. L. (George Lloyd), 1848-19141
- Maia, Reinaldo Jayme.1
- Maia, Vicente José da.1
- Mais, Charles.1
- Major, G. W., author1
- Major, George W., author1
- Mangeon, Henrique.1
- Manges, Morris, author1
- Manley, Thomas H. (Thomas Henry), 1851-1905 author6