Focus on geographic activity :  a collection of original studies / 
Richard S. Thoman and Donald J. Patton 
 - New York  :  McGraw-Hill,  1964 
 - 199 p.  :  maps  ;  26 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>LCCN: </label>63-022528 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic geography