Reference
- Wintrobe , M. M. 1951 . Clinical Hematology. , 3rd Ed. , 316 Philadelphia, Pennsylvania : Lea & Febiger .
- Page , L. B. and Culver , P. J. 1961 . Syllabus of Laboratory Examinations in Clinical Diagnosis , Cambridge, Massachusetts : Howard University Press .
- Birren , J. E. , eds. 1963 . Human Aging , Washington, D. C. : U. S. Government Printing Office .
- Davis , H. and Kranz , F. W. 1964 . The Significance of New Reference Zero Levels for Audiometers . Mag. Stds. , March : 71
- Riley , E. C. , Sterner , J. H. , Fassett , D. W. and Sutton , W. L. 1961 . Ten Years' Experience with Industrial Audiometry . Amer. Ind. Hyg. Assoc. J. , 22 : 151
- Jackson , J. E. , Fassett , D. W. , Riley , E. C. and Sutton , W. L. 1962 . Evaluation of the Variability in Audiometric Procedures . J. Acoust. Soc. Amer. , 34 : 218