H. Harper

Silica, diatoms, and Cenozoic radiolarian evolution

H. Harper, A. Knoll, 1975 .

Diatom Biostratigraphy of Sites 434, 435, and 436, Northwestern Pacific, Leg 56, Deep Sea Drilling Project

H. Harper, 1980 .

Evolution of extensional styles at the southern termination of the Nordland Ridge, Mid-Norway: a response to variations in coupling above Triassic salt

H. Harper, R. Hooper, K. Storhaug, 1999 .

The American Upper Ordovician Standard. XIX. A Middle And Upper Ordovician Reference Standard for the Eastern Cincinnati Region

H. Harper, W. C. Sweet, Dennis G. Zlatkin, 1974 .

Biostratigraphy, paleomagnetism and sedimentology of Late Cenozoic sediments in northwestern Hokkaido, Japan

H. Harper, D. Kent, H. Ujiié, 1977 .

North American Commission on Stratigraphic Nomenclature Note 70: Records of the Stratigraphic Commission 2014-2017

H. Harper, P. Sadler, R. Orndorff, 2020 .