Subjects: Astrophysics; Astronautics and state--United States--History--20th century; HistoryHISTORY / Americas (North, Central, South, West Indies); NON-CLASSIFIABLE; SCIENCE / General
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Subjects: Statistics; Mathematics; HistoryMATHEMATICS / Probability & Statistics / General; MATHEMATICS / General; SCIENCE / History
Subjects: Chemistry—History; Science—History; Science—Study and teachingSCIENCE / Chemistry / General; SCIENCE / History; SCIENCE / Study & Teaching
Subjects: Radioactive decay; Science—History; Nuclear physicsSCIENCE / Physics / Atomic & Molecular; MATHEMATICS / History & Philosophy; SCIENCE / History
Subjects: Statistics; History; RaceMATHEMATICS / Probability & Statistics / General; SCIENCE / History; SOCIAL SCIENCE / Sociology / General
Subjects: Human ecology—History; History, Modern; Science—HistoryHISTORY / General; HISTORY / Modern / General; LANGUAGE ARTS & DISCIPLINES / Communication Studies
Subjects: Natural products; Chemistry—History; Science—HistorySCIENCE / Chemistry / Organic; SCIENCE / Life Sciences / Biochemistry; SCIENCE / Chemistry / General
Subjects: Technology; History; Science—HistoryTECHNOLOGY & ENGINEERING / History; SCIENCE / History; TECHNOLOGY & ENGINEERING / Mechanical
Subjects: Mathematics; History; Science—HistoryMATHEMATICS / History & Philosophy; SCIENCE / History; SCIENCE / Philosophy & Social Aspects