TY - BOOK AU - Whitmore, Frank C. CN - HC13 .W48 1981 CN - HC13 CY - Washington : DA - 1981. ID - 40804 KW - Natural resources KW - Environmental policy N1 - Includes list of speakers and participants at symposium. PB - U.S. Dept. of the Interior, Geological Survey, PP - Washington : PY - 1981. T1 - Resources for the 21st century :summary and conclusions of the International Centennial Symposium of the U.S. Geological Survey / TI - Resources for the 21st century :summary and conclusions of the International Centennial Symposium of the U.S. Geological Survey / ER -