Steel, W.H. <br/><br/>
The birefringent filter /  
W.H. Steel. 
 - Melbourne :    Common Wealth Scientific and Industrial Research Orga nisation,    1964. 
 - 18 p. :    ill. ;    24 cm. 
 - National standards laboratory technical paper ;    no. 17 .
<br/><br/>Includes bibliographical references (p. 18) 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Filters (Mathematics)
<br/><br/><label>Gov. Doc. Class. No.: </label>G. AUS C82 (08)1/17