00361nam a2200145Ia 4500 0000006487 20251012174452.0 841004s1956 xx a 000 0 chi TN758 .C55 Wo kuo ti yu s?e chin shu kung yeh. 1956. 28 p illus 19 cm. Romanized. Nonferrous metals. 4185 4185 0 0 0 0 KEM KEM 2012-12-07 0 0000003817 2025-10-12 08:34:48 2025-10-12 OS