Keywords: Reasons suggestive of mining on physical principles for gold and coal (Page 4) BHL48227549.jpg Reasons suggestive of mining on physical principles for gold and coal a review of the assumptions of geologists / 48227549 187324 105978 Page 4 Text Table of Contents 1 http //www biodiversitylibrary org/page/48227549 1875 10 5962/bhl title 105978 Beilby J Wood; Research pseud Public domain The BHL considers that this work is no longer under copyright protection <br> Biodiversity Heritage Library PD-old-70-1923 Reasons suggestive of mining on physical principles for gold and coal Images uploaded by Fæ Files from the Biodiversity Heritage Library |