TY  - BOOK
AU  - Brown,Lester R.
TI  - State of the world 1991: a worldwatch institute report on progress toward a sustainable society 
SN  - 0393307336 
U1  - 363.73 22
PY  - 1991///
CY  - New York
PB  - W. W. Norton
KW  - Environmental Pollution
KW  - Pollution
N1  - Includes bibliographical references and index
ER  -