On the graptolites of the Arenig and Llandeilo rocks of St. David's
By: by John Hopkinson...and Charles Lapworth....
Contributors: Lapworth, Charles, 1842-1920.
Publisher: s.n.
Published: 1875
Place of publication: [London
Language: eng
Number of pages: 672
Subjects: Graptolites.; Geology -- Scotland.
Notes: From title page: "From the Quarterly Journal of the Geological Society for November 1875".