Helmkamp, George K. <br/><br/>
Selected experiments in organic chemistry / 
George K. Helmkamp and Harry W. Johnson. 
 - 3rd ed. 
 - San Francisco:  W.H. Freeman,  1983. 
 - xii, 195 p. :  ill. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry, Organic--Laboratory manuals.