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Contributions to the Micro-Palæontology of the Cambro-Silurian Rocks of Canada. By Arthur H. Foord. (Part II. By E. O. Ulrich.-Contributions to Candian Micro-Palæontology.-Part III. By Prof. T. Rupert Jones.-Part IV. By Dr. D. Rüst.).

出版	1883
URL	http://books.google.com.hk/books?id=Uc6gnQEACAAJ&hl=&source=gbs_api