World Health Organization. (1987). Principles of studies on diseases of suspected Chemical etiology and their prevention. Geneva: WHO.
Citación estilo ChicagoWorld Health Organization. Principles of Studies On Diseases of Suspected Chemical Etiology and Their Prevention. Geneva: WHO, 1987.
Cita MLAWorld Health Organization. Principles of Studies On Diseases of Suspected Chemical Etiology and Their Prevention. Geneva: WHO, 1987.
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