Nagata, Masayoshi <br/><br/>
On flat extensions of a ring/ 
Masayoshi Nagata. 
 - Montreal:  Presses de l'Université de Montréal,  1971. 
 - 52 p.:  28 cm. 
 - Séminaire de mathématiques supérieures  46. .
<br/><br/> English or French.  At head of title: Université de Montréal. Département de mathématiques. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>084050182X 
<br/><br/><label>LCCN: </label>72193813 
<br/><br/><label>Nat. Bib. No.: </label>C*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rings (Algebra)<br/>Surfaces, Ruled.<br/>Rings (Algebra)<br/>Surfaces, Ruled.
<br/><br/><label>Dewey Class. No.: </label>512/.4