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Authors
- R. A. L., author1
- Raffy, Katharine Foote, 1881-1970 author1
- Ramsey, Walter Reeve, 1872- author1
- Reed, Charles B. (Charles Bert), 1866-1940 author1
- Richet, Charles, 1850-19351
- Ringer, Paul H. (Paul Henry), 1881-1952 author1
- Rivers, Thomas M. (Thomas Milton), 1888-19622
- Rivers, Thomas M. (Thomas Milton), 1888-1962, author1
- Roberts, John B. (John Bingham), 1852-19241
- Roberts, John B. (John Bingham), 1852-1924 author1
- Robertson, John Dill, author3
- Robertson, John Dill.1
- Rockefeller Institute for Medical Research, author.1
- Root, Esther Sayles, author1
- Rosenow, Edward C. (Edward Carl), 1875-19662
- Ruslander, Frank.1