Abstract - A Black Hills Speleobibliography
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Schilberg, Gary. 1986. A Black Hills Speleobibliography. National Speleological Society, Paha Sapa Grotto. 186 p. Abstract Indexed references to a number of sources describing various aspects of caves and cave studies in the Black Hills of South Dakota. |
Did You Know?
White Penstemon is the most widespread penstemon or beardtongue in the Great Plains. The insides of the blossoms are bearded and often spotted with purple. More...