00282nam a2200109Ia 4500008004100000041000800041082002400049100001900073245003000092260004100122300000900163230411s9999    xx            000 0 und d  aeng  aM/616.01/BUR/B01868  aBurdon Kenneth  aText Book of Microbiology  bMacmillan PublishingaNew Yorkc1950  a728p