Page:The British Coal Trade - Jevons.djvu/10

This page has been proofread, but needs to be validated.

PRINTED IN GREAT BRITAIN BY
BEN JOHNSON AND CO. LTD., YORK, ENGLAND.

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:The_British_Coal_Trade_-_Jevons.djvu/10&oldid=11606824"