Authors: Ro
- Van Bergen, R. (Robert) - 2 books
- Carmichael, R. D. (Robert Daniel) 1879-1967 2 books
- Roschier, Tekla 1870-1928 2 books
- Shrader, E. Roscoe (Edwin Roscoe) 1879-1960 2 books
- Rudder, Robert S. - 2 books
- Roth, Herb 1887-1953 2 books
- Scott, C. Rochfort (Charles Rochfort) 1790-1872 2 books
- Koehler, S. R. (Sylvester Rosa) 1837-1900 2 books
- Murri, Romolo 1870-1944 2 books
- Munro, Robert 1835-1920 2 books
- Helper, Hinton Rowan 1829-1909 2 books
- Edwards, Robert 1879-1948 2 books
- Roth, Henry - 2 books
- Lawrence, Robert Means 1847-1935 2 books
- Cheney, Roland - 2 books
- Wells, Joseph Robert - 2 books
- Kuykendall, Roger - 2 books
- Robins, Edward 1862-1943 2 books
- Rogers, Henry 1806-1877 2 books
- Rothman, David H. - 2 books
- Nathan, Robert 1894-1985 2 books
- Musil, Robert 1880-1942 2 books
- Yerkes, Robert Mearns 1876-1956 2 books
- Roberts, Kenneth Lewis 1885-1957 2 books
- Rowe, Nicholas 1674-1718 2 books
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