Dòng Nội dung
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International travel and health : situation as on 1 January 2007 / World Health Organization
Geneva : World Health Organization, 2007
233 p.
Ký hiệu phân loại (DDC): 613.68
This book is designed for medical and public health professionals who advise travellers, but it is also a standard reference for travel agents, airlines, shipping companies, and travellers themselves.
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