About TOBITA M
About Geographical Survey Inst., Ministry of Construction, Ibaraki-Ken, JPN
About MATSUZAKA S
About Geographical Survey Inst., Ministry of Construction, Ibaraki-Ken, JPN
About OTOI K
About Geographical Survey Inst., Ministry of Construction, Ibaraki-Ken, JPN
About Bulletin of the Geographical Survey Institute
About geodetic survey
About Geographical Survey Inst.
About Surveying in general
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About 測地観測