Diffraction grating handbook 
Bausch & Lomb diffraction grating reseaech laboratory        
 - Rochester  Bausch and Lomb  1970 
 - 60p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomical instrumentation<br/>Astronomy and astrophysics thesaurus<br/>Handbooks
<br/><br/><label>Universal Decimal Class. No.: </label>520.2(063)  / BAU