Worsnop, B. L.  b. 1892 <br/><br/>
X-rays / 
by B. L. Worsnop and F. C. Chalklin 
 - London :  Methuen,  1946 
 - vii, 126 p. :  ill. ;  18 cm. 
 - Methuen's monographs on physical subjects .
<br/><br/><label>Subjects--Topical Terms: </label><br/>X-rays