Brumfiel, Gregory W. <br/><br/>
Partially ordered rings and semi-algebraic geometry/ 
Gregory W. Brumfiel. 
 - Cambridge, UK  New York:  Cambridge University Press,  1979. 
 - 280 p.:  ill.;  23 cm. 
 - London Mathematical Society lecture note series;  37. .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 273-277. 
<br/><br/><label>ISBN: </label>052122845X 
<br/><br/><label>LCCN: </label>80469087 //r85 
<br/><br/><label>Nat. Bib. No.: </label>GB*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commutative rings.<br/>Categories (Mathematics)
<br/><br/><label>Dewey Class. No.: </label>512.4