In: Douglas MacLean, Editor, , Rowman and Allenheld, New York (1986).Michael Thompson, Michael Warburton and Tom Hatley, Uncertainty on a Himalayan Scale: An Institutional Theory of Environmental Perception and a Strategic Framework for the Sustainable Development of the Himalayas, Milton Ash Editions/Ethnographica, Totowa, New Jersey (1986) 162 pp. £16.50.