World Health Organization. South - East Asia & World Health Organization. (1999). Essential drugs for primary health care: A manual for health workers in South-East Asia. World Health Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Health Organization. South - East Asia και World Health Organization. Essential Drugs for Primary Health Care: A Manual for Health Workers in South-East Asia. Geneva: World Health Organization, 1999.
Παραπομπή σε μορφή MLA (8th εκδ.)World Health Organization. South - East Asia και World Health Organization. Essential Drugs for Primary Health Care: A Manual for Health Workers in South-East Asia. World Health Organization, 1999.
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