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Hay Fever and the National Flower
Notes and References
This item contains 3 references.
1" ]ayfever: Its Cause and Prevention," W. Seheppegrell, M.D., Journal of the American Med- ical Association, March 4, 1916
2"Hayfever: Its Cause and Prevention in the Rocky Mountain and Pacific States," W. Seheppe- grell, M.D., United States Publie Health Repors, July 20, 1917.
3I I Hayfever and Its Prevention," W. Scheppe- grell, M.D., United States Public Health Reports, July 21, 1916.