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Dr. Larson is a specialrtt rn Med* •cal Genot ics—a nd it ts tho wórk ot goneticistft that ha* demon-str.ited not only the iruth but the underiymg cautto ot tho k>ng-observcd phenomonon that "One man s moat ia an-othor s poison*' When we gc to othor płanets. that wild varb ablo is apt to be cr«t»caUy Im porta nt—and useful

BY CARL A. LARSON