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Lower Cretaceous Calcareous Nannofossil Biostratigraphy in the Danish Central Trough

Claus Heilmann-ClausenErik ThomsenHenrik FriisJohannes Fabricius

出版	I kommission hos C.A. Reitzels forlag, 1987
ISBN	87421075049788742107508
URL	http://books.google.com.hk/books?id=ByBSAQAAMAAJ&hl=&source=gbs_api