HeadingJeffreys, John Gwyn used in: Bibliothèque nationale de France, Paris
Jeffreys, John Gwyn used in: Integrated Authority File (GND), Germany
Sources
Found inBN Cat. gén.. — British biogr. arch.. — LCNA (CD), 1996-03. — On the mollusca procured during the "Lightning" and "Porcupine" expeditions / by J. G. Jeffreys, 1995 [document électronique : reprod. de l'éd. de 1878-1885]
John Gwyn Jeffreys (1809-1885), British conchologist [Unknown authorUnknown author / Journal of Conchology vol. 4 (1883-1885) -- Public domain -- http://commons.wikimedia.org/wiki/File:John Gwyn Jeffreys cropped.jpg]