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1991
El Hadidi, M. N. |
Batanouny, K. H. |
Fahmy, A. G. |
UNEP
The african elephant
1989
The world environment 1972 -1982 : a report
1982
Holdgate, Martin W. |
Kassas, Mohammed |
White, Gilbert F. |
Methods for estimating risk of chemical injury : human and non-human biota and ecosystems
1985
Vouk, Velimir B. |
Methods for assessing the effects of chemicals on reproductive functions
1983
Vouk, Velimir B. |
Sheehan, Patrick J. |
Methods for assessing the effects of mixtures of chemicals
1983
Vouk, Velimir B. |
Adaptive environmental assessment and management
1978
Holling, C. S. |
Holdgate, Martin W. |