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Subject
- Science--Study and teaching5
- Hercules Powder Company4
- Atomic structure3
- Atomic structure--Study and teaching3
- Cellulose industry3
- Chemical industry3
- Valence (Theoretical chemistry)3
- Chemical laboratories2
- Chemistry--Experiments2
- Educational films2
- Machinery2
- Scientific apparatus and instruments2
- Adams, Roger, 1889-19711
- Airplanes1
- Ballistic missiles1
- Ballistic missiles--Testing1
- Bartow, Edward, 1870-19581
- Bibliographical citations1
- Blood alcohol--Analysis1
- Bogert, Marston Taylor, 1868-19541