51639521
9780267953219
Ehrenfeld, Frederick is the author of 'Study of the Igneous Rocks at York Haven and Stony Brook, Pa. and Their Accompanying Formations : Thesis, Presented to the Faculty of the Department of Philosophy of the University of Pennsylvania, in Partial Fulfillment of the Requirements for the Degre', published 2018 under ISBN 9780267953219 and ISBN 0267953216.
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