Estonia

In Estonia three types of shale tar have been used as alternatives to anthracene oil or carbolineum.

在爱沙尼亚，已有种页岩焦用作氯化的替换物。

In the network attack that launched in the light of Estonia 2007, among them a means namely psywar.

在2007年针对爱沙尼亚发起的网络攻击中，其中一个方式即心理战。

This character differs from other Ordovician source rocks elsewhere in the world such as Kukersite Kerogen in Estonia and Guttenburgen type source rocks in USA.

其组成主要有底栖宏观藻类、线叶植物、隐孢子、疑源类和几丁虫等。