Masai Mara National Reserve viewing track development plan
1980
Thorsell, J. W. |
George, C. B. |
Trump, E. C. |
Thorsell, J. W.
Guidelines : development of national parks and protected areas for tourism (Persian/Farsi version)
1992
Ceballos-Lascuráin, Héctor |
Madjnoonian, Henrik |
McNeely, Jeffrey A. |
Thorsell, J. W. |
ICNP national park handbook : basic installations and facilities, sections 5.31 and 5.32
1974
Thorsell, J. W. |
A trail use surveys, Banff and Yoho national park
1967
Thorsell, J. W. |
Mountain protected areas
Thorsell, J. W. |
From strength to strength : World Heritage in its 20th year
1992
Thorsell, J. W. |
Protection of nature in mountain regions
1997
Thorsell, J. W. |
Which islands merit World Heritage status ?
Thorsell, J. W. |
Managing protected areas in Eastern Africa : a training manual
1984
Thorsell, J. W. |