TY - BOOK ID - 135836883 TI - Beryl resources of the Black Hills of South Dakota AU - Tullis, Edward L. AU - United States. PY - 1952 PB - [Washington, D.C.] : U.S. Department of the Interior, Bureau of Mines, DB - UniCat KW - Beryl. KW - Pegmatites. UR - https://www.unicat.be/uniCat?func=search&query=sysid:135836883 AB - ER -