| Alfred Sommer, Keith P. West - 1996 - 476 pagina’s
Many studies over the past decade and a half have indicated that vitamin A status is an important determinant of health. The World Bank now estimates that vitamin A ... | |
| Alfred Sommer - 2013 - 116 pagina’s
Triumph, tragedy, frustration, and elation await those who set off on careers in public health, and Ten Lessons in Public Health is destined to become a classic book that puts ... | |
| Alfred Sommer - 1978 - 68 pagina’s
Abstract: Xerophthalmia is a leading cause of child blindness, especially in developing countries where many cases are observed in malmourished individuals. Since needless loss ... | |
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