Subjects: Technology; History; Science—HistoryTECHNOLOGY & ENGINEERING / History; SCIENCE / History; TECHNOLOGY & ENGINEERING / Mechanical
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Subjects: Mechanical engineering; Machinery; Science—HistoryTECHNOLOGY & ENGINEERING / Mechanical; SCIENCE / History; TECHNOLOGY & ENGINEERING / Machinery
Subjects: History; Anthropology; Mechanical engineeringTECHNOLOGY & ENGINEERING / Mechanical; BIOGRAPHY & AUTOBIOGRAPHY / Cultural & Regional; HISTORY / General
Subjects: History; Machinery; EngineeringTECHNOLOGY & ENGINEERING / Industrial Design / General; SCIENCE / History; TECHNOLOGY & ENGINEERING / Machinery
Subjects: Weapons; Machinery; Communication in science--HistoryHISTORY / General; ARCHITECTURE / History / General; MATHEMATICS / History & Philosophy
Subjects: History; Engineering; Mechanical engineers--BiographySCIENCE / History; SCIENCE / Life Sciences / General; TECHNOLOGY & ENGINEERING / General
Subjects: Engineering; History; Machinery--China--HistoryTECHNOLOGY & ENGINEERING / Machinery; SCIENCE / History; TECHNOLOGY & ENGINEERING / Mechanical