Tankard, R R . <br/><br/>
Chemistry in the Service of the Community /  Textual Documents 
R R Tankard. 
 - London :  Benn Brothers Ltd ,  1922. 
 - 19p. ;  23 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Chemistry T/G-Chemistry 
<br/><br/><label>Dewey Class. No.: </label>540  / T 156 C