TY  - BOOK
AU  - Brown, Lester R et al                                       
TI  - State of the world 1987: A Worldwatch Institute report on progress toward a sustainable society                         
SN  - 0-87692-489-5
PY  - 1987///
CY  - New Delhi                                                   
PB  - Prentice-Hall of India                                      
KW  - Environmental science
ER  -