TY  - BOOK
AU  - Turner, B. L. (Billie Lee), 1945-
TI  - The Earth as transformed by human action : global and regional changes in the biosphere over the past 300 years
SN  - 0521363578
AV  - GF 75 Ear 
PY  - 1990///
CY  - New York
PB  - Cambridge University Press
KW  - POPULATION--CONGRESSES
KW  - Nature--Effect of human beings on--Congresses
KW  - GLOBAL ENVIRONMENTAL CHANGE
KW  - ENVIRONMENT
KW  - Human ecology--Congresses
N1  - Based on papers presented at a symposium held at Clark University, Worcester, Mass., Oct. 25-30, 1987. -Includes bibliographical references and index
ER  -