Leverett, Frank,  1859-1943. <br/><br/>
Surface formations and agricultural conditions of northeastern Minnesota, 
by Frank Leverett and Frederick W. Sardeson, with a chapter on Climatic conditions of Minnesota by U. G. Purssell. 
 - Minneapolis,  The University of Minnesota,  1917. 
 - vi, 72 p.  illus. (maps) xv pl. (incl. fold. map in pocket) diagrs.  23 cm. 
 - Minnesota Geological Survey. Bulletin  no. 13 .
 - Bulletin (Minnesota Geological Survey) ;  no. 13. .
<br/><br/> At head of title: The University of Minnesota.  "In cooperation with the United States Geological survey." 
<br/><br/><label>LCCN: </label>gs 17000292  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Minnesota.<br/>Agriculture--Minnesota.<br/>Soils--Minnesota.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Minnesota--Climate.
<br/><br/><label>LC Class. No.: </label>QE127  / .A22 no. 13