GOLD - SILVER -- HACKENBROCH, Y. Enseignes. Renaissance Hat Jewels. 1996. -- R. FRITZ. Die Gefässe aus Kokosnuss in Mitteleuropa 1250-1800. (1983). -- H.-U. METTE. Der Nautiluspokal. (1995). -- 3 vols. 4°. Ocl. w. dust-j. -- Added: R.J. FORBES. Studies in Ancient Technology. 2nd rev. ed. Vol. VIII & IX. 1971-72. 2 vols. Ocl. w. dust-j. On the mining of copper, iron, etc. and on metallurgy. -- (5).