Notes on geomagnetic observatory and survey practice
Wienert, K. A.
Notes on geomagnetic observatory and survey practice K. A. Wienert - Paris Unesco 1970 - 217p. bibliography
Geomagnetic Instruments, CalibrMagnetic ObservatoryMagnetic Survey
550.380.2+550.389 / WIE
Notes on geomagnetic observatory and survey practice K. A. Wienert - Paris Unesco 1970 - 217p. bibliography
Geomagnetic Instruments, CalibrMagnetic ObservatoryMagnetic Survey
550.380.2+550.389 / WIE