Van Praagh, G. (Gordon) <br/><br/>
Chemistry by discovery :  an introductory course of chemistry for schools / 
by G. Van Praagh. 
 - 2nd ed. 
 - London :  J. Murray,  1960. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry -- Laboratory manuals.--Chemistry -- Laboratory manuals.