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Publication Extents

Not all publications have extents, not all extents are completely accurate
Self-calibrating seismic amplifier and telemetry system
John R. Van Schaack
1975, Open-File Report 75-64
A frequency modulated, constant bandwidth, telemetry system has been designed to transmit simultaneously up to 8 channels of seismograph data from remote locations to a central recording site via radio or voice-grade telephone circuit. By utilizing state-of-the-art integrated circuits, the size of the remote unit has been considerably reduced over...
Water resources data for California, 1974; Part 1: Surface water records; Volume 2: Northern Great Basin and Central Valley
Water Resources Division, U.S. Geological Survey
1975, Water Data Report CA-74-1-2
Surface-water records for the 1974 water year for California, including records of streamflow or reservoir storage at gaging stations, partial-record stations, and miscellaneous sites, are given in this report. Records for a few pertinent gaging stations in bordering States also are included. The records were collected and computed by the...