TY  - BOOK
AU  - Guenther, Ernest
TI  - Essential oils
PY  - 1949///
CY  - New York: 
PB  - D Van Nostrand Company, Inc., 
N1  - Vol.2 (The constituents of essential oils); xiii, 852p.
Vol. 4 (Individual essential oils of the plant...); xiv, 752p.
Vol. 6(Individual essential oils of the plant families); xvi, 481p
ER  -