1.

電子ブック
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1. Anthracite basins of eastern Pennsylvania : Pottsville to Shamokin, Pennsylvania, July 13-16, 1989
leaders, Jane R. Eggleston, William E. Edmunds ; contributions by Christopher Wnuk
出版情報: 1989.  1 online resource (vii, 29 pages) 
シリーズ名: Field trip guidebook ; T242
オンライン: https://doi.org/10.1029/FT242
2.

電子ブック
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2. Characteristics of the mid-carboniferous boundary and associated coal-bearing rocks in the Appalachian Basin : Morgantown, West Virginia to Chattanooga, Tennessee, July 10-27, 1989
William E. Edmunds, Jane R. Eggleston
出版情報: 1989.  1 online resource (118 pages) 
シリーズ名: Field trip guidebook ; T352
オンライン: https://doi.org/10.1029/FT352