Hemmer, William,  1936- <br/><br/>
Conceptions of space :  beginning geometries for college / 
William Hemmer 
 - San Francisco :  Canfield Press,  1973 
 - 112 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0063836270 
<br/><br/><label>LCCN: </label>73-10192 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry