Masai Mara National Reserve viewing track development plan Author(s) Thorsell, J. W. George, C. B. Trump, E. C.
Guidelines : development of national parks and protected areas for tourism (Persian/Farsi version) Author(s) 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 Author(s) Thorsell, J. W.
The road to Caracas : a post audit of the implementation of the Bali Action Plan Author(s) Thorsell, J. W.
