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Start Over You searched for: Languages English Remove constraint Languages: English Copyright Public domain Remove constraint Copyright: Public domain Publication Year 1950 to 1959 Remove constraint Publication Year: <span class="from" data-blrl-begin="1950">1950</span> to <span class="to" data-blrl-end="1959">1959</span>

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1. Suggested procedure for potency testing of poliomyelitis vaccine: 18 November 1957

8. Letter from Joshua Lederberg to Arthur Kornberg

9. Letter from W. E. Cohn to Arthur Kornberg

10. Letter from Alexander Rich to Arthur Kornberg