TY  - BOOK
AU  - Allen,Milton Arthur
AU  - Butler,G.M.
TI  - Asbestos,
T2  - Arizona. Bureau of mines, Bulletin
AV  - TN930 .A5
PY  - 1921///
CY  - Tucson, Ariz.
PB  - University of Arizona, Arizona bureau of mines
KW  - Asbestos
N1  - At head of title: University of Arizona bulletin; Selected bibliography: p.30-31
ER  -