Vaccination certificate requirements and health advice for international travel situation as on 1 January 1987.
| Müşterek Yazar: | |
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| Materyal Türü: | Kitap |
| Dil: | English |
| Baskı/Yayın Bilgisi: |
Geneva, Albany, NY
World Health Organization WHO Publications Centre USA [distributor]
1987.
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