Smith, John E.  1878- <br/><br/>
Lesson helps in agricultral geology,  for use with Emerson's Agricultural geology (Wiley & sons) 
by John E. Smith. 
 - [Ames, Iowa?]  1936. 
 - 48 p.  illus. (map)  23 cm. 
<br/><br/>"References": p. 8, 42-43. 
<br/><br/><label>LCCN: </label>gs 37000221  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology.<br/>Soils.
<br/><br/><label>LC Class. No.: </label>QE33  / .S57