TY  - BOOK
AU  - Mackenzie,Fred T.
TI  - Our changing planet: an introduction to Earth system science and global environmental change 
SN  - 0132713217
PY  - 1998///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Environmental sciences
KW  - Human ecology
KW  - Nature
KW  - Effect of human beings on
N1  - Includes bibliographical references and index
ER  -