U.N. treaty to aid 'international' fish. Weber, P. 1994. Worldwatch Paper No. 120. The Transition in the Contribution of Living Aquatic Resources to Food Security. International Food Policy Research Institute.
Paths can be a significant source of soil loss in tropical rainforests.
Jatun Sacha, Ecuador, and La Selva, Costa Rica. New U.N. soil survey pinpoints erosion problem areas. Meeting of the American Astronomical Society. Pun, J., et al. Meeting of the American Astronomical Society.