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Epidemiology for public health practice / Robert H. Friis, Thomas A. Sellers.
- 614.4 F9129 1999
- Friis, Robert H.
- Aspen Publishers,
- 1999.
- Gaithersburg, Md. :
-
Epidemiology for public health practice / Robert H. Friis, Thomas A. Sellers.
- 614.4 F9129
- Friis, Robert H.
- Aspen Publishers,
- 1996.
- Gaithersburg, Md. :
-
Community-based prevention : programs that work / Ross C. Brownson, Elizabeth A. Baker, Lloyd F. Novick.
- 362.12 B8857
- Brownson, Ross C.
- Aspen Publishers,
- 1999.
- Gaithersburg, Md. :