Li Yuhua, Li Xiaoning. GEOMAGNETIC CALIBRATION INSTRUMENT WITH DIGITAL PROGRAMMED CONTRAL[J]. North China Earthquake Sciences, 1995, 13(3): 77-80.
Citation:
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Li Yuhua, Li Xiaoning. GEOMAGNETIC CALIBRATION INSTRUMENT WITH DIGITAL PROGRAMMED CONTRAL[J]. North China Earthquake Sciences, 1995, 13(3): 77-80.
|
Li Yuhua, Li Xiaoning. GEOMAGNETIC CALIBRATION INSTRUMENT WITH DIGITAL PROGRAMMED CONTRAL[J]. North China Earthquake Sciences, 1995, 13(3): 77-80.
Citation:
|
Li Yuhua, Li Xiaoning. GEOMAGNETIC CALIBRATION INSTRUMENT WITH DIGITAL PROGRAMMED CONTRAL[J]. North China Earthquake Sciences, 1995, 13(3): 77-80.
|