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by Remley, Theodore P., Jr.; Herlihy, Barbara P.
by Allen, Eileen K.; Cowdery, Glynnis Edwards
by American Geological Institute, AGI; NAGT - National Association of Geoscience Teachers; Cronin, Vincent; et al.
by Hansberry, Lorraine
by Salinger, J. D.
by Rothwell, J. Dan
by Diana Dugan
by Starkey, David
by Benward, Bruce; Saker, Marilyn
by Wood, Brian