Runge, Carl <br/><br/>
Geographical methods / 
by Carl Runge 
 - New York :  Columbia University Press,  1912 
 - vii, 148 p. ;  21 cm. 
<br/><br/> At head of the tittle: Columbia university 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching
<br/><br/><label>Dewey Class. No.: </label>510.7