Twyman, F.  1876-1959 <br/><br/>
Metal spectroscopy / 
F. Twyman 
 - London :  Charles Griffin,  1951 
 - vii, 569 p. :  ill., ports. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metals--Analysis<br/>Spectrum analysis