Twyman, F. <br/><br/>
The practice of absorption spectrophotometry with hilgeri instruments 
F. Twyman  
 - 2nd ed. 
 - London  Adam Hilger  1941 
 - 140p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spectrophotometry<br/>Spectroscopy
<br/><br/><label>Universal Decimal Class. No.: </label>535.33  / TWY