Alaska Mineral List

Fairbanks, 美国 中的 政府服务
建议编辑 · 你的企业? 马上申领

添加更多信息

From providing information related to oil and mineral discoveries to helping after fatal landslides, Division of Geological & Geophysical Surveys staff …

社交资料

常见问题解答

问:
What is a datum and why do I need to care about tidal datums?
答:
A vertical datum is a reference surface from which we can measure elevations on the earth's surface. The North American Vertical Datum of 1988 (NAVD88) is currently...
数据来源: BusinessWebsite
糟糕! 出现问题了,请几分钟后再试