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Google圖書搜尋
The Liassic Ammonite Zones and Subzones of the North-west European Province
William Thornton Dean
Desmond Thomas Donovan
Michael Kingsley Howarth
出版
British Museum (Natural History)
, 1961
URL
http://books.google.com.hk/books?id=AptnnJ3-2AkC&hl=&source=gbs_api