... ecological systems which are not yet sufficiently understood; Recognizing the necessity to restrict the number of places where large numbers of tourists may land so that the ecological effects may be monitored; Recommend to their Governments that:... Report of the Tenth Consultative Meeting: Washington, D.C., Sept. 17-Oct. 5 ... - 25. lappuse 1979 - 137 lapas Pilnskats -
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