00239nam a2200097Ia 4500008004100000082001500041100001800056245002300074260003300097300001100130240817s9999    xx            000 0 und d  a589.9 H218  aHammer, B. W. 0aDairy bactriologly  c1957a New Yorkb Jone Wiley  a614 p.