Find number abc
If b80ca - c5ba6 = 62aa5 find number abc. Multiple solutions may exist.Correct answers: 31
The first user who solved this task is Nasrin 24 T.
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Salk vaccine field trialIn 1955, the Salk vaccine against polio was announced to work, and be “safe, effective and potent,” after a year-long field trial. Dr. Thomas Francis, Jr. made the statement at a press conference in Ann Arbor, Michigan, on the tenth annniversary of the death of Franklin Roosevelt (1945), the U.S. president who was a victim of the disease. Dr. Francis was a former professor of Jonas Salk. |