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National Health and Social Development in Costa Rica : A Case Study of Intersectoral Action / Leonardo Mata and Luis Rosero.
- Pan American Health Organization,
- 1988.
- Washington D.C. :
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Patterns of mortality in childhood : report of the inter-American investigation of mortality in childhood / Ruth Rice Puffer, Carlos V. Serrano.
- 362.1091812 P9779
- Puffer, Ruth Rice,
- Pan American Health Organization,
- 1973.
- Washington, DC :