Yazar
helen belyea
7 cilt bulundu.
Cilt sonuçları
Deep wells and subsurface stratigraphy of part of the St. Lawrence Lowlands, Quebec
Helen R. Belyea · E. Cloutier, Queen's Printer
113 sayfa · 1952
Geology / Natural gas / Petroleum / Oil well drilling
The Devonian cedared and Harrogate formations in the Beaverfoot, Brisco, and Stanford Ranges, Southeast British Columbia
Helen R. Belyea · Dept. of Energy, Mines and Resources
64 sayfa · 1967
Formations (Geology) / Geology / Stratigraphic Geology
Upper Devonian formations, southern part of Northwest Territories, northeastern British Columbia, and northwestern Alberta
Helen R. Belyea · Dept. of Mines and Technical Surveys
74 sayfa · 1962
Stratigraphic Geology / Geology