W. Gunkel,  <br/><br/>
Handbook of Essential Oils Vol. 2 

 - First Edition 
 - [S.l.]  [s.n.]  2017 
 - 720 p. 
<br/><br/><label>ISBN: </label>9389017920(02) 9789389017922(15) 
<br/><br/><label>Source: </label> 3116.00