MICRO-ORGANISMS 



• WHAT THEY ARE 



• WHERE THEY GROW 



• WHAT THEY DO 



By C. FL Benjamin, W. C. Haynes, arid C. W. Hesseitine 



Miscellaneous Publication No. 955 



Agricultural Research Service 



UNITED STATES DEPARTMENT OF AGRICULTURE 



Washington, D.C. Issued May 19 6 4 



For sale by fhe Superintendent of Documents, U.S. Government Printing Office 

 Washington, D.C, 20402 - Price 20 cents 



