細節
NINE PAMPHLETS BY GEORGE F. KUNZ
Washington Government Printing Office
PRECIOUS STONES, 1888
THE PRODUCTION OF PRECIOUS STONES IN 1900
THE PRODUCTION OF PRECIOUS STONES IN 1902
THE PRODUCTION OF PRECIOUS STONES IN 1903
THE PRODUCTION OF PRECIOUS STONES IN 1904
THE PRODUCTION OF PRECIOUS STONES IN 1905
THE PRODUCTION OF PRECIOUS STONES IN 1906
THE PRODUCTION OF PRECIOUS STONES FOR THE YEAR 1927
THE PRODUCTION OF PRECIOUS STONES FOR THE YEAR 1928
THE PRODUCTION OF PLATINUM FOR THE YEAR 1928
Washington Government Printing Office
PRECIOUS STONES, 1888
THE PRODUCTION OF PRECIOUS STONES IN 1900
THE PRODUCTION OF PRECIOUS STONES IN 1902
THE PRODUCTION OF PRECIOUS STONES IN 1903
THE PRODUCTION OF PRECIOUS STONES IN 1904
THE PRODUCTION OF PRECIOUS STONES IN 1905
THE PRODUCTION OF PRECIOUS STONES IN 1906
THE PRODUCTION OF PRECIOUS STONES FOR THE YEAR 1927
THE PRODUCTION OF PRECIOUS STONES FOR THE YEAR 1928
THE PRODUCTION OF PLATINUM FOR THE YEAR 1928