Progress in essential oil research :  proceedings of the International Symposium on Essential Oils / 
editor Ernst-Joachim Brunke. 
 - Berlin :  Walter De Gruyter,  1986. 
 - 668 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>3110106140 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Essences and essential oils--Congresses