TY  - RPRT
TI  - Selected bibliography of andalusite, kyanite, sillimanite, dumortierite topaz, and pyrophyllite in the United States
AU  - Agnes B. Grametbaur
PY  - 1959
DO  - 10.3133/b1019n
UR  - https://pubs.usgs.gov/publication/b1019N
ID  - b1019N
ER  -