Kellerman, Karl F.  1879-1934. <br/><br/>
Legume inoculation and the litmus reaction of soils. 
By Karl F. Kellerman ... T.R. Robinson ... 
 - Washington,  Govt. Print. Off.,  1910. 
 - 11 p.  23 cm. 
 - United States. Dept of Agriculture. Bureau of Plant Industry. Circular  no. 71 .
<br/><br/><label>LCCN: </label>agr10001751  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrifying bacteria.<br/>Litmus reaction of soils.
<br/><br/><label>LC Class. No.: </label>SB19  / .A33 no. 71