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Author

Helen Tappan

6 books found

Cover of Foraminiferal genera and their classification

Foraminiferal genera and their classification

Alfred R. Loeblich, Alfred R. Loeblich Jr., Helen Tappan · First published 1988

Cover of The paleobiology of plant protists

The paleobiology of plant protists

Helen Niña Tappan · First published 1980

Placeholder cover for Treatise on Invertebrate Paleontology. Part C Vol. 2

Treatise on Invertebrate Paleontology. Part C Vol. 2

Alfred R. Loeblich, Jr., and Helen Tappan · First published 1964

Placeholder cover for Fossil phytoflagellates

Fossil phytoflagellates

Helen Tappan · First published 1960

Placeholder cover for Foraminifera from the Arctic slope of Alaska

Foraminifera from the Arctic slope of Alaska

Helen Niña Tappan · First published 1951

Placeholder cover for Plane sextic curves invariant under birational transformations

Plane sextic curves invariant under birational transformations

Anna Helen Tappan · First published 1915