Rocks and Minerals: How We Identify Them
- 上映日期
- 1971-01-01
- 上映年份
- 1971
- 片长
- 13分钟
- 历史资料评分
- 0
剧情介绍
Shows how common rocks and minerals can be identified by color, texture, hardness, streak and other standard procedures.
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Shows how common rocks and minerals can be identified by color, texture, hardness, streak and other standard procedures.
返回本站专题