Authors: R.
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- Ettinger, R. C. W. (Robert C. W.) 1918-2011 353 downloads
- Edwards, Thomas 1739-1810 353 downloads
- Howd, Cloice R. 1888- 352 downloads
- Lyman, Richard Roswell 1870-1963 352 downloads
- Haan, R. E. de (Romke Everts) 1833-1899 351 downloads
- Phillips, R. - 351 downloads
- Groves, Ernest R. (Ernest Rutherford) 1877-1946 350 downloads
- Bonfadini, Romualdo 1831-1899 349 downloads
- Gordon, I. R. F. 1939- 349 downloads
- Wheeler, R. L. - 349 downloads
- Rothe, Rudolf 1873-1942 349 downloads
- Koskimies, A. R. - 349 downloads
- Stockheker, R. W. (Ralph Walter) 1908-2004 347 downloads
- Lawlor, R. E. - 347 downloads
- Richards, Charles R. (Charles Russell) 1865-1936 347 downloads
- Power, R. A. (Richard Anderson) 1888-1974 347 downloads
- Heine, Frank R. - 347 downloads
- Mace, D. R. (David Robert) - 346 downloads
- Heaton, H. R. - 346 downloads
- Birdwood, William Riddell Birdwood, Baron 1865-1951 346 downloads
- Macfie, R. A. Scott (Robert Andrew Scott) 1868-1935 345 downloads
- Spencer, Erle 1897-1937 345 downloads
- Cravath, James Raley 1872-1962 345 downloads
- Dudgeon, R. E. (Robert Ellis) 1820-1904 344 downloads
- Peck, Rufus H. (Rufus Harrison) 1838-1923 344 downloads