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Jniversité de Li4ze EZ
17 place Delcour

Lidése/Belgium Liége, 18th February 1964 FEB 24 1964

Professor Joshua Lederberg
Stanford University Medical School
Stanford,Calif

USA

Dear Professor Lederberg,

As you are aware, a part of the next Symposium (12-14
May 1964) of COSPAR at Florence is to he devoted to Life Sciences.
Ve would like to have a review paper on exobiology and to see
the emphasis placed on the problem of sterilization. It would
be very kind of you if ya could accept to prepare and present
this review paper. In the event of it being impossible for
you to accept this invitation, would you be kind enough to ask
Dr. Hlliott Levinthal to do so.

With kind regards,

Yours sincerely,

i ” /

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siarcel Florkin