Gellert W <br/><br/>
VNR concise encyclopedia of mathematics 
Gellert W 
 - 2 
 - New  york Van Nostrand Reinhold      1989 
 - 776p  cm. 
 - Photos .
<br/><br/><label>Standard No.: </label>20743 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"Bk, M9/RR"