TY - BOOK AU - Hansen,Thomas TI - Trilobites of the Middle Ordovician Elnes Formation of the Oslo region, Norway T2 - Fossils and strata, SN - 9781405198844 PY - 2009/// CY - Chichester, West Sussex, UK PB - Wiley-Blackwell KW - Trilobites KW - Norway KW - Paleontology KW - Ordovician N1 - "March 2009"--Cover; Includes bibliographical references (p. 150-155) ER -