Sack, Robert David. <br/><br/>
Conceptions of space in social thought :  a geographic perspective / 
Robert David Sack. 
 - Minneapolis :  University of Minnesota Press,  c1980. 
 - ix, 231 p. :  ill. ;  22 cm. 
<br/><br/><label>ISBN: </label>0816610126  0816610150  
<br/><br/><label>Dewey Class. No.: </label>114