PRINCIPLES OF 

 SOIL MICROBIOLOGY 



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SELMAN A. WAKSMAN 



Associate Professor of Soil Microbiology, 

 Rutgers University, and Microbiologist of the 

 New Jersey Agricultural Experiment Stations 



LONDON 



BAILLIERE, TINDALL AND COX 



8 HENRIETTA STREET, COVENT GARDEN, W. C. 2 



1927 



