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Subjects
- D'Utassy, Frederick George.1
- DDT4
- DDT -- therapeutic use1
- DNA, Bacterial1
- Dairying2
- Dale Hospital (Worcester, Mass.)1
- Dark Adaptation1
- Darley, Ward, 1903-1979.1
- Darnall General Hospital (Danville, Ky.)1
- Darwin, Charles, 1809-1882.2
- Darwin, Erasmus, 1731-1802.1
- Data Accuracy1
- Data Analysis1
- Data Collection4
- Data Collection -- methods2
- Datura stramonium2
- Davis, Phebe B.1
- De Camp General Hospital.1
- De Haven, Edwin Jesse, 1816-1865.1
- DeBakey, Michael E. (Michael Ellis), 1908-2008.1