INTERNATIONAL PATENT CLASSIFICATION

被引:0
|
作者
BAYER, K
机构
来源
METALL | 1975年 / 29卷 / 03期
关键词
D O I
暂无
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
引用
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页码:284 / 285
页数:2
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