TY  - BOOK
AU  - Ehrlich,Paul R.
AU  - Ehrlich,Anne H.
TI  - Extinction: the causes and consequences of the disappearance of species 
SN  - 0345330943
PY  - 1983///
CY  - New York
PB  - Ballantine Books
KW  - Nature conservation
KW  - Ecology
KW  - Endangered species
KW  - Extinct animals
N1  - Ballantine books edition; Includes bibliographical references and index
ER  -