The first mid-Polish group is the youngest among the main Neogene lignite seams in Poland. Lignites of this group developed in the middle Miocene over almost the whole of Poland, and therefore they...

中文翻译：

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来自波兰中部 Adamów 褐煤矿床的中中新世孢粉植物群

第一个中波兰组是波兰新近纪主要褐煤煤层中最年轻的。该组的褐煤在几乎整个波兰的中新世中期发育，因此它们......