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2. American Anti-Vivisection Society, 1903 Chestnut Street, Philadelphia, Pennsylvania 19103.
3. American Association for Laboratory Animal Science (1967). Manual for Laboratory Animal Technicians (AALAS, 2317 W. Jefferson Street, Suite 208, Joliet, Illinois 60435).
4. American Biology Teacher, 22, 479–83 (Animal Welfare Institute, 1960). Abuse of Animals in the Classroom and how it can be avoided.
5. ANDREWES, C. H., WALTON, J. R. (1977). Viral and Bacterial Zoonoses (Baillière-Tindall).