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Population and the environment : an introduction
Zilberman, David, (2000)
Population and environment : conference overview
Narain, Urvashi, (2000)
Čečenskaja Respublika: priroda, ėkonomika i ėkologija : učebnoe posobie
Bajrakov, Idris Abdurašidovič, (2006)
Vulnerability and resilience, greater Khartoum ecosystem
Sammani, Mohamed O. el-, (1983)
The Jonglei Canal: on evolution of the project model
Sammani, Mohamed O. el-, (1985)
The Jonglei Canal: dynamics of planned change in the Twic Area
Sammani, Mohamed O. el-, (1984)