- Gates, Olcott, 1919-1
- Geological Survey (U.S.), issuing body1
- Gildersleeve, Benjamin, 1907-20031
- Hadley, R. F. (Richard Frederick), 1924-1
- Hampton, E. R.1
- Hansen, Dan E.1
- Hansen, Robert E.1
- Hāphijauddina, Ema1
- Hedlund, David Carl, 1924-1
- Higgins, Michael W.1
- Hong Kong. Crown Lands & Survey Office1
- Hopkins, M. E., 1928-1
- Hottin, G.1
- Hunter, D. R. (Donald Raymond), 1927-1
- Hyde, Luther W.1
- Institut géographique national (France)1
- Instituto Geográfico Nacional (Guatemala)1
- International Seismological Centre1
- International Statistical Programs Center (U.S.)1
- Italy. Istituti di geologia e minerologia dell'Università di Padova, issuing body1
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