Medical X-ray photo optical systems evaluation :  proceedings of a symposium held in Columbia, Maryland October 21-23, 1974 

 - Washington, D.C. :  The Department of Health, Education, and Welfare,  1975 
 - 245 p. :  ill., chart, port. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optical instruments--Design and construction--Congresses<br/>Lasers--Congresses<br/>Respiratory organs--Diseases--Diagnosis<br/>Medical screening
<br/><br/><label>Dewey Class. No.: </label>537.5352