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Authors
- Raha, Heinrich.1
- Ramdohr, C. A. von (Caesar August von), -1912 author1
- Rauch, John H. (John Henry), 1828-1894 author1
- Reuling, George, 1839-1915 author1
- Reuss, P. J., author1
- Reynolds, Edward, 1793-18811
- Robb, R. L. (Robert Lee)1
- Rohlwes, Johann Nicolaus, 1755-18231
- Rosenthal, Richard S., author3
- Rudolphy, John, author1
- Ruppricht, S. (Siegfried), 1778-1