Martin, Helen M.  1889-1973. <br/><br/>
Outline of the geologic history of Ogemaw County / 
Helen M. Mandeville. 
 - [Lansing, Mich. :  Michigan Dept. of Conservation, Geological Survey Division,  1957] 
 - [12] p. :  ill., maps ;  28 cm. 
<br/><br/> Cover title. 
<br/><br/><label>LCCN: </label>gs 58000146  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Michigan--Ogemaw County.<br/>Geology, Stratigraphic.
<br/><br/><label>LC Class. No.: </label>QE126.O37  / M3