Subjects: Cities and towns--United States--History--20th century; City planning--United States--History--20th centuryBIOGRAPHY & AUTOBIOGRAPHY / Business; HISTORY / United States / General
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Subjects: Pharmaceutical technology--History; Medicine--History; Pharmacology--HistoryMEDICAL / Pharmacology; MEDICAL / History; MEDICAL / Pain Management
Subjects: Chemists--Germany--Biography; Nitrogen fertilizers--History--20th century; Technological innovations--History--20th centurySCIENCE / Chemistry / General; HISTORY / Military / Biological & Chemical Warfare; SCIENCE / History
Subjects: Medical scientists--Germany--Biography; Physicians; Bacterial diseases--ChemotherapySCIENCE / Life Sciences / Bacteriology; HISTORY / Civilization; HEALTH & FITNESS / Vaccinations