| Save | Year | Entries | |
| Diphtheria -- New York (State) -- New York -- History -- 20th century : Hammonds, Evelynn Maxine | c1999 | 1 | |
| Diphtheria -- Treatment | 1898 | 1 | |
| Diplazontinae : Dasch, Clement E | 1964 | 1 | |
| Diploma mills -- United States : Johnson, David A., | 2018 | 1 | |
Your entry Diplomatic and consular service would be here
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| Diplomats -- China -- Biography : Lane-Poole, Stanley, | 1901 | 1 | |
| Diplomats -- United States -- Biography : Carlée, Roberta Baughman | c1979 | 1 | |
| Diplopappus -- See Asters | 1 | ||
| Diplopapus -- See Asters | 1 | ||
| Diplopterys : Gates, Bronwen, | 1982 | 1 | |
| Diplusodon : Cavalcanti, Taciana Barbosa, | 2021 | 1 | |
| Dipole moments | c1972 | 1 | |
| Dipropylacetic acid -- See Valproic acid | 1 | ||
| Dipsacales -- See also Valerianaceae | 1 | ||
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Dipsomania -- See Alcoholism --subdivision Alcohol use under names of individual persons, and under classes of persons and ethnic groups |
1 | ||
| Diptera -- 7 Related Subjects | 7 | ||
| Diptera | 5 | ||
| Diptera -- Africa : Gaschen, Henri | 1945 | 1 | |
| Diptera -- Austria : Schiner, Ignaz Rudolph, | 1862 | 1 | |
| Diptera -- Central America | 1903 | 1 | |
| Diptera -- Classification | 3 | ||
| Diptera -- Evolution : Patterson, John Thomas, | c1952 | 1 | |
| Diptera -- Mexico | 1903 | 1 | |
| Diptera -- North America | 5 | ||
| Diptera -- Pennsylvania : Roback, Selwyn S., | 1957 | 1 | |
| Diptera -- Pictorial works | 2 | ||
| Diptera -- Popular works : Weed, Clarence Moores, | 1901 | 1 | |
| Diptera -- Spain -- Catalonia : Encobet, Josep Arias | 19--? | 1 | |
| Dipterans -- See Diptera | 1 | ||
| Dipterocarpaceae | 2 | ||
| Dipterous insects -- See Diptera | 1 | ||
| Direction, Sense of -- See Orientation | 1 | ||
| Dirk Visser & Co. : Dirk Visser & Co | 1966 | 1 | |
| Dirtless farming -- See Hydroponics | 1 | ||
| Disabilities -- See also Mental illness | 1 | ||
| Disaffection (Social psychology) -- See Alienation (Social psychology) | 1 | ||
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Disaster relief -- See also Red Cross and Red Crescent --subdivision War work--Red Cross under individual wars, e.g. World War, 1939-1945--War work--Red Cross |
1 | ||
| Discharges (Electricity) -- See Electric discharges | 1 | ||
| Discomycetes | 9 | ||
| Discomycetes -- France : Gillet, C.-C. | 1879- | 1 | |
| Discourse analysis, Narrative -- See also Narration (Rhetoric) | 1 | ||
| Discourses -- See Lectures and lecturing | 1 | ||
| Discoverers -- See Explorers | 1 | ||
| Discoveries in geography -- 3 Related Subjects | 3 | ||
| Discoveries in geography | 7 | ||
| Discoveries in geography -- American : United States. | 1853 | 1 | |
| Discoveries in geography -- Early works to 1800 : Fleurieu, C. P. Claret | 1800 | 1 | |
| Discoveries in geography -- English : Hakluyt, Richard, | 1907 | 1 | |
| Discoveries in geography -- Maps : Nebenzahl, Kenneth, | c1990 | 1 | |
| Discoveries in geography -- Scandinavian : Nansen, Fridtjof, | 1911 | 1 | |
| Discoveries in science. | 5 | ||