Preserving Historic Records
![Map of the World-Wide Standardized Seismograph Network (WWSSN) stations](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Preserving%20Historic%20Earthquake%20Records.gif?itok=vfIuVm58)
Detailed Description
Map of the World-Wide Standardized Seismograph Network (WWSSN) stations (triangles) where the quantity of film chips scanned is indicated by the color.
Sources/Usage
Public Domain.
Map of the World-Wide Standardized Seismograph Network (WWSSN) stations (triangles) where the quantity of film chips scanned is indicated by the color.
Public Domain.