Brumfiel, Gregory W <br/><br/>
Partially ordered rings and semi-algebraic geometry 
Gregory W. Brumfiel 
 - 1st ed 
 - Cambridge  Cambridge University Press  1979 
 - 280 p. : ill. ; 23 cm 
<br/><br/> Includes index. Bibliography: p. 273-277 
<br/><br/><label>ISBN: </label>9780521228459 
<br/><br/><label>ISSN: </label>80469087 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Categories (Mathematics)<br/>Commutative rings
<br/><br/><label>Dewey Class. No.: </label>512.4 BRU