4
1
10
The Essential Oils (Volume Two)
Janssen, W.
Additional Author
Guenther,E
Additional Author
Braunschweig, T.
Additional Author
mixed material
Toronto
D. Van Nostrand Company, Inc.
1952
Library Review (Forestry Commission)
Anon
Additional Author
Janssen, W.
Additional Author
Temel, Tugrul
Additional Author
Karimov, F.
Additional Author
mixed material
London
Her Majesty,s Stationery Office
1973
Decision-Making in Forest Management (2nd Edition)
Janssen, W.
Additional Author
Ali Kissi
Additional Author
Williams,M.R.W
Additional Author
mixed material
England
Research Studies Press Ltd
1988
Proceedings of the United Nations Scientific Conference on the Conservation and Utilization of Resources (vol. 5, Forest Resources)
Anon
Additional Author
Hitzel, M.
Additional Author
Janssen, W.
Additional Author
mixed material
USA
United Nations Department of Ecomomic Affairs
1951