00389nam a2200121Ia 4500008004100000041001200041082002200053100002200075245011300097250001200210260003700222300000800259231217s9999    xx            000 0 und d  aEnglish  a612.028  DIF;1  R  aDifco Laboratory. 0aDifco manual of dehydrated culture media and reagents for microbiological and clinical laboratory procedures  a8th ed.  c1948bDifco LaboratoryaMichigan  a224