Biodiversity Heritage Library
Subject "Pike County"
Forest situation in Pike and Monroe counties, Pennsylvania /
By: Buttrick, John A. - Barlett, Robert. - Robinson, Donald F. - Northeastern Forest Experiment Station (Radnor, Pa.)
Publication info: Philadelphia, Pa. :Northeastern Forest Experiment Station,1945.
Holding Institution: U.S. Department of Agriculture, National Agricultural Library
Subjects: Forests and forestry Monroe County Pennsylvania Pike County
Time factors of differentially preserved wood in two calcitic concretions in Pennsylvanian black shale from Indiana /
By: Woodland, Bertram G. - Richardson, Catherine Kessler,
Publication info: Chicago :Field Museum of Natural History,1975.
Holding Institution: University Library, University of Illinois Urbana Champaign
Subjects: Indiana Paleobotany Pennsylvanian Pike County Shale Trees, Fossil