00407nam a2200121Ia 4500008004100000082001800041100002300059245005500082260003200137365000600169630005500175730005500230100415s9999    xx            000 0 und d  b7682a573.301  aWiilliams  Leonard  aChallenges to Survival : A Phylosophy of Evolution  aLONDONc1971bANDRE DEUTSCH  b0  aChallenges to Survival : A Phylosophy of Evolution  aChallenges to Survival : A Phylosophy of Evolution