Welkowitz, Walter, 1926- <br/><br/>
Biomedical instruments 
Walter Welkowitz, Sid Deutsch 
 - New York  Academic Press  1976 
 - xv, 279 p. : ill. ; 24 cm. 
<br/><br/><label>ISBN: </label>0127441506 
<br/><br/><label>LCCN: </label>76-013954 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medical instruments and apparatus<br/>Biomedical engineering