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  1. The nature and origin of cone-in-cone structure /
    By: Woodland, Bertram G.
    Publication info: Chicago :Chicago Natural History Museum Press ,1964.
    Holding Institution: University Library, University of Illinois Urbana Champaign
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  2. Pyritic cone-in-cone concretions /
    By: Woodland, Bertram G.
    Publication info: Chicago :Field Museum of Natural History,1975.
    Holding Institution: University Library, University of Illinois Urbana Champaign
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  3. 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
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