00265nam a2200097Ia 4500008004100000082002300041100002000064245003800084260003700122300000800159140113s9999    xx            000 0 und d  a575.1:576.312   K6  a"Fraser, Alex."  a"Heredity, Genes and Chromosomes"  a1966bMcGraw Hill BookcNew York  a324