Helmut H. J. Geldsetzer

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Books by Helmut H. J. Geldsetzer (50 max)

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Reefs: Canada and Adjacent Areas

1988

Helmut H. J. Geldsetzer, Noel P. James, Canadian Society of Petroleum Geologists

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Upper Devonian stratigraphy and sedimentology, southern Alberta Rocky Mountains

1982

Helmut H. J. Geldsetzer