Find number abc
If 7b2c3 - ac210 = 1a083 find number abc. Multiple solutions may exist.Correct answers: 2
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Yellow fever vaccineIn 1932, a vaccine was announced for yellow fever for human immunization. This first public announcement was made at a meeting of the American Societies for Experimental Biology at Philadelphia, Pennsylvania. It was developed by Drs. Wilbur A. Sawyer, Wray D.M. Lloyd, and Stuart F. Kitchen, who were sponsored by the Rockefeller Foundation. |