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Psyche
Volume 78 (1971), Issue 4, Pages 267-295
http://dx.doi.org/10.1155/1971/80989

Additional Insects in Pennsylvanian Concretions From Illinois

1Harvard University, Cambridge, Mass. 02138, USA
2Field Museum of Natural History, Chicago, Illinois 60605, USA

This article is in the public domain.

Abstract

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