Judul asli : "Systems Ecology :
No Inv.: 156/AF/Perp/94/1c
No Inv.: 622-624/Pb/Perp/92/3c~3135-3136/P/Perp/92/2c~9864/P/Perp/92/1c
No Inv.: 464/P/Perp/97/1c
Judul asli : "State of the World 1992"
No Inv.: 1640/S/Perp/98/1c
No Inv.: 11826/P/Perp/98/1c
No Inv.: 127-136/P/Perp/98/10c
Judul asli : "Ecology and Tropical Biology"
Judul asli : "The Worldwacth Reader, on Global Environmental Issues"