TY  - BOOK
AU  - Turner,B.L.
TI  - The Earth as transformed by human action: global and regional changes in the biosphere over the past 300 years 
SN  - 0521363578 (hbk.)
U1  - 304.2 EAR 23
PY  - 1990///
CY  - Cambridge, New York
PB  - Cambridge University Press with Clark University
KW  - Nature
KW  - Effects of human beings on
KW  - Congresses
KW  - Human ecology
KW  - Global environmental change
KW  - Population
N1  - "Based on papers presented at a symposium held at Clark University, Worcester, Mass., Oct. 25-30, 1987."; Includes bibliographical references and index
ER  -