Parker, Francis D. <br/><br/>
The structure of number systems/ 
Francis D. Parker. 
 - Englewood Cliffs, N.J.:  Prentice-Hall,  [1966]. 
 - xi, 137 p.:  illus.,  24 cm. 
 - Teachers' mathematics reference series .
<br/><br/><label>LCCN: </label>66010184 //r902 
<br/><br/><label>Nat. Bib. No.: </label>GB66-20474 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory.<br/>Teoria dos números.
<br/><br/><label>Dewey Class. No.: </label>512.8