Vol. s3-21, Issue 122, 1881February 01, 1881 EDT
The Millstone Grit in England and Pennsylvania
The Millstone Grit in England and Pennsylvania
Henry Martyn Chance,
Chance, H. M. (1881). The Millstone grit in England and Pennsylvania. American Journal of Science, s3-21(122), 134–135. https://doi.org/10.2475/ajs.s3-21.122.134