1. Criteria for Eosinophilia;Discombe;Lancet,1946
2. Eosinophilia in Asthma, Hay Fever, and Allied Conditions;Brown;J. Lab. & Clin. Med,1927
3. Clinical Hematology;Wintrobe,1961
4. The Number of Circulating Eosinophils;Uhrbrand;Acta med. scandinav,1958
5. Clinical Hematology;Wintrobe,1961