Sachs, M. (1990). World guide to scientific associations and learned societies: 5. World guide to scientific associations and learned societies, 5.
Citación estilo ChicagoSachs, Michael. "World Guide to Scientific Associations and Learned Societies: 5." World Guide to Scientific Associations and Learned Societies 1990: 5.
Cita MLASachs, Michael. "World Guide to Scientific Associations and Learned Societies: 5." World Guide to Scientific Associations and Learned Societies, 1990, p. 5.
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