Abstract - A Black Hills Speleobibliography
Schilberg, Gary. 1986. A Black Hills Speleobibliography. National Speleological Society, Paha Sapa Grotto. 186 p.
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?
Blue Flax is often considered a subspecies of the Eurasian L. perenne which is very similar. The plant is named after Meriwether Lewis. More...