Kells, Lyman M. Kern Willis.F Bland James.R <br/><br/>
Slide rule: aa self instruction manual 
	Lyman M. Kells, Willia F. Kern, James R. Bland 
 - New York  Keuffel & Esser  1955 
 - 126 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Slide rule
<br/><br/><label>Dewey Class. No.: </label>629.1309  / KEL