Platt, Robert S. <br/><br/>
Field study in American Geography  : the development of theory and method exemplified by selections 
/Robert S. Platt 
 - Chicago  Illinois  1959 
 - 23-405 p. 
<br/><br/><label>ISBN: </label>83488 
<br/><br/><label>Dewey Class. No.: </label>917.3  / PLA