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Start Over You searched for: Creator Orgel, Leslie E. ✖ Remove constraint Creator: Orgel, Leslie E. Creator Crick, Francis, 1916-2004 ✖ Remove constraint Creator: Crick, Francis, 1916-2004 Periodical Proceedings of the National Academy of Sciences of the United States of America ✖ Remove constraint Periodical: Proceedings of the National Academy of Sciences of the United States of America Story Section Defining the Genetic Coding Problem, 1954-1957 ✖ Remove constraint Story Section: Defining the Genetic Coding Problem, 1954-1957 Exhibit Tags defining ✖ Remove constraint Exhibit Tags: defining