Mitchell R L <br/><br/>
Spectrographic analysis of soils, plants and related materials 
by Mitchell R L 
 -  1948 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>74191 
<br/><br/><label>Source: </label> Textbook 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:1m3:N48, H8