20 lectures 

 - Providence, R. I. :  American Mathematical Society,  1977 
 - 129 p. 
 - American Mathematical Society translations. Series 2  ; v. 109 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>MATEMATICAS
<br/><br/><label>Dewey Class. No.: </label>510  / I61 1974