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1.
Fenestrate bryozoans from the Glen Dean limestone (middle Chester) of southern Indiana / by John Utgaard [and] T. G. Perry. by Series: Bulletin (Indiana. Geological Survey) ; no. 19.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Bloomington : State of Indiana, Dept. of Conservation, Geological Survey, 1960
Availability: No items available.

2.
Trepostomatous bryozoan fauna of the upper part of the Whitewater formation (Cincinnatian) of eastern Indiana and Western Ohio / by John Utgaard and T. G. Perry. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Bloomington, Ind. : Printed by authority of the State of Indiana, 1964
Availability: No items available.

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