World Directory of Mathematicians
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... D. Richardson, S. Ridler-Rowe, С J. Rigby, J. F. Riley, Norman Ringrose, John
Robert Ripley, В. D. Roach, Gary F. Roaf, Dermot James Roberts, A. P. Roberte,
B. Roberts, H. G. Roberts, Paul Harry Roberts, R. S. Robertson, A. G. Robertson,
...