Seismograph calibrations, Port Moresby Geophysical Observatory, TPNG, 1958-1962

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: Ripper, I. D.
Kaituhi rangatōpū: Australia
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: [Canberra ] Bureau of Mineral Resources, Geology and Geophysics [1966].
Rangatū:Record 1966/185.
Ngā marau:
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