Kragh, Helge <br/><br/>
Phosphors and phosphorus in early Danish natural philosophy / 
by Helge Kragh 
 - Copenhagen :  Royal Danish Academy of Sciences and Letters,  2003 
 - 75 p. :  ill., facsims. ;  23 cm. 
 - Historisk-filosofiske meddelesler ;  88 .
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>8778763479 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bioluminescence.<br/>Phosphorescence.<br/>Phosphorus.<br/>Science--History.--Denmark
<br/><br/><label>Dewey Class. No.: </label>535.353