GEORGIUS AGRICOLA DE RE METALLICA TRANSLATED FROM THE FIRST LATIN EDITION OF 1556 with Biographical Introduction, Annotations and Appendices upon the Development of Mining Methods, Metallurgical Processes, Geology, Mineralogy & Mining Law
from the earliest times to the 16th Century BY HERBERT CLARK HOOVER A. B. Stanford University, Member American Institute of Mining Engineers, Mining and Metallurgical Society of America, Société des Ingéniéurs Civils de France, American Institute of Civil Engineers,
Fellow Royal Geographical Society, etc., etc.
AND LOU HENRY HOOVER A. B. Stanford University, Member American Association for the Advancement of Science, The National Geographical Society, Royal Scottish Geographical Society, etc., etc. 1950 Dover Publications, Inc. NEW YORK