HEARINGS BEFORE THE SUBCOMMITTEE ON MINES AND MINING OF THE S.S. Congresso Hovese COMMITTEE ON HOUSE OF REPRESENTATIVES EIGHTY-EIGHTH CONGRESS FIRST SESSION ON CONDITIONS IN THE DOMESTIC LEAD-ZINC MINING INDUSTRIES JUNE 13 AND 14, JULY 8, 1963, 4- AUG1 Serial, Nd.Copy Printed for the use of the co2i; U.S. GOVERNMENT PRINTING OFFICE WASHINGTON : 1963 20-705 |