BIOLOGY In the interest of economy, this report has been reproduced direct from copy as submitted to the Technical Information Service. PRINTED IN USA PRICE 25 CENTS Available from the Office of Technical Services Department of Commerce Washington 25, D. C. Other issues of this report may bear the number UWFL-23(App. ). Work performed under Contract No. AT(45-1)5h0. A DOP UE EN AECD-3446(App. ) AEC, Oak Ridge, Tenn.-W31893

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