Naval Observatory. Establishment of Naval Observatory circle and determination of geographical position of center of clock room, by E. D. Preston; app. 6, report, 1896.
Publication Title:
Naval Observatory. Establishment of Naval Observatory circle and determination of geographical position of center of clock room, by E. D. Preston; app. 6, report, 1896.
Display Title:
Naval Observatory. Establishment of Naval Observatory circle and determination of geographical position of center of clock room, by E. D. Preston; app. 6, report, 1896.