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Start Over You searched for: Dates by Range 1950-1999 Remove constraint Dates by Range: 1950-1999 Publication Year 1963 Remove constraint Publication Year: <span class="single" data-blrl-single="1963">1963</span>

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53. Exobiology [Letter to the Editor of Science]

55. Letter from Mark Van Doren to Joshua Lederberg

56. Letter from Eugene P. Wigner to Mark Van Doren

57. Letter from Eugene P. Wigner to Joshua Lederberg

58. Letter from E. Van Tongeren to Joshua Lederberg

59. Letter from Joshua Lederberg to E. Van Tongeren

60. Letter from Joshua Lederberg to Charles Yanofsky