Second geological survey of Pennsylvania : geological map of Berks County / J.P. Lesley, state geologist, compiled from the surveys of F. Prime, E.V. D'Invilliers, R.H. Sanders.
15811135
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Beinecke Rare Book and Manuscript Library > Second geological survey of Pennsylvania : geological map of Berks County / J.P. Lesley, state geologist, compiled from the surveys of F. Prime, E.V. D'Invilliers, R.H. Sanders.