Worsnop, Bernard Lister <br/><br/>
X-rays 
by B. L. Worsnop ; with a preface by O. W. Richardson. 
 - London  Methuen  [1930] 
 - ix, 101 p.  ill. 
 - Methuen's monographs on physical subjects .
<br/><br/> "With 36 diagrams."  Includes index. 
<br/><br/>Bibliography: p. 97. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>X-rays