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alfred c lenz
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Ludlow and Pridoli (Upper Silurian) graptolites from the Arctic Islands, Canada
Alfred C. Lenz · NRC Research Press
141 sayfa · 2004
Graptolites / Graptolithes / Paleontology / Paléontologie
Upper Wenlock (Silurian) graptolites of Arctic Canada
Alfred C. Lenz, A. Kozowska-Dawidziuk · Geological Assn of Canada
61 sayfa · 2001
Graptolites / Paleontology / Fossil Animals