II.—Notes on the Coal Measures of Beaver County, Pennsylvania
Published in Annals of The Lyceum of Natural History of New York, in 1876, in volume 11, issue 1, pages 14-18
Date published:1876-09
Published in Annals of The Lyceum of Natural History of New York, in 1876, in volume 11, issue 1, pages 14-18
Date published:1876-09