Walker, Gordon <br/><br/>
Astronomical observations : an optical perspective 

 - Cambridge:  Cambridge Univeristy Press,  1987 
 - xii, 347 p. : ill. ; 26 cm 
<br/><br/><label>ISBN: </label>9780521339070 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomical instruments
<br/><br/><label>Dewey Class. No.: </label>522.2 WAL