TY  - BOOK
AU  - Leakey,Richard E.
AU  - Lewin,Roger
TI  - The sixth extinction: Patterns of life and the future of humankind 
SN  - 9780385424974
U1  - 304.2 20
PY  - 1995///
CY  - New York
PB  - Doubleday
KW  - Nature
KW  - Effect of human beings on
KW  - Evolution (Biology)
KW  - Extinction (Biology)
N1  - Includes bibliographical references (p. [255)-262) and index
ER  -