Book(print)#119973 versions availableThe earth as transformed by human action: global and regional changes in the biosphere over the past 300 years ; [based on papers presented at a symposium held at Clark University, Worcester, Mass. on Oct. 25 - 30, 1987]Turner, Billie Lee; Jordan, Montine; Turner, B.L.; Clark, William C.Turner, Billie Lee; Jordan, Montine; Turner, B.L.; Clark, William C.Order using Availability