Seismic drums
1964 June
- Title
- Seismic drums
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Physics
- Identifier
- 10.50-4
- Dates
- 1964 June
- Extents
- 1 photographs (negative)
- Abstract
- It records east-west motion, one north-side motion, and one vertical motion. Seismology.