00338nam a2200133Ia 4500008004100000082001600041100001500057245003300072260004200105300000800147650001800155650001800173653001300191170901s1951    xx            000 0 und d  a575.1bD93G  aDunn, L.C. 0aGenetics in the 20th Century  aNew YorkbThe Macmillan Companyc1951  a634  aLife sciences  aPure Sciences  aGenetics