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by Brian J. Skinner (Yale Univ.); Stephen C. Porter (Univ. of Washington); Daniel B. Botkin (The Center for the Study of the Environment, George Mason Univ.)
by Koneman, Philip A.
by Duffy, Tim
by Toliver, Pamela R.; Johnson, Yvonne; Koneman, Philip A.
by Brian J. Skinner (Yale Univ., New Haven, Connecticut)
by Holt Rinehart and Winston
by Editor: Simon Stewart (Glasgow University); Editor: Lynda Blue
by Provenzano
by Eric Foner