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- 87620526 contributor B5567529.
- 87620526 created "1986.".
- 87620526 date "1986".
- 87620526 date "1986.".
- 87620526 dateCopyrighted "1986.".
- 87620526 description "Bibliography: p. 147-164.".
- 87620526 extent "iii, 245 p. :".
- 87620526 isPartOf "Iowa Geological Survey technical paper ; no. 7".
- 87620526 issued "1986".
- 87620526 issued "1986.".
- 87620526 language "eng".
- 87620526 publisher "Iowa City, Iowa (123 N. Capitol St., Iowa City 52242) : Iowa Geological Survey,".
- 87620526 spatial "Iowa.".
- 87620526 subject "561/.13/09777 19".
- 87620526 subject "Coal Geology Iowa.".
- 87620526 subject "Paleobotany Pennsylvanian.".
- 87620526 subject "Palynology Iowa.".
- 87620526 subject "QE993 .R345 1986".
- 87620526 title "Palynostratigraphy of the lower and middle Pennsylvanian coals of Iowa / Robert L. Ravn.".
- 87620526 type "text".