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3. Department of Water Affairs and Forestry, South Africa. Minimum requirements for waste disposal by landfill, second edition, South Africa, 1998.
4. Environmental Conservation Act 73 of 1989, Pretoria, government printer, 1989. South Africa.
5. Precautions in medical care of, and in handling materials from patients with transmissible virus dementia (Creutzfeldt-Jakob disease);Gajdsek;New England Journal of Medicine,1997