Welford, W. T. <br/><br/>
Geometrical optics :  optical instrumentation / 
W.T. Welford 
 - Amsterdam :  North-Holland,  1962 
 - x, 200 p :  ill ;  22 cm 
 - Undergraduate textbooks in physics ;  v. 1 .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optics, Geometrical
<br/><br/><label>Dewey Class. No.: </label>535.32  / WEG 1962