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1515 Massachusetts Avenue AAAS Board AAAS Bulletin AAAS members Advancement of Science advertising pages Annual Meeting Bentley Glass bers bership Board of Directors Bulletin American Association Carnegie Corporation cation Cattell cent Chauncey Leake Chemical China Chinese scie Committee on Science Communist Cooperation among Scientists Council courses Dael Wolfle Executive double cluster editor elected gain goals guidelines high school hope human welfare improvement John Wesley Powell Johns Hopkins University land List magazine major Medical ment method NASDTEC National Science National Science Foundation organizations Paul Weiss Powell's President problem Promotion of Human public understanding recommended school teachers Science 1515 Massachusetts science and mathematics science books science educa Science Foundation science teachers science writers sessions Simon Newcomb square miles subject matter symposium Teacher Education teachers of science teaching tion tional U.S. Geological Survey Understanding of Science Warren Weaver Washington weekly Wolfle Executive Officer