Welford, W. T <br/><br/>
Aberrations of optical systems 
W.T. Welford 
 - Bristol  A. Hilger  1989, c1986 
 - xi, 284 p. : ill. ; 25 cm 
<br/><br/> Includes bibliographical reference and index 
<br/><br/><label>ISBN: </label>9780852745649 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aberration<br/>Geometrical optics<br/>Optical instruments - Design and construction
<br/><br/><label>Dewey Class. No.: </label>535.33 WEL