TY  - RPRT
TI  - Structural materials. Cement and concrete materials. Clays. Gypsum and plasters. Line and magnesite. Glass, sand, etc. Abrasives
AU  - Charles Butts
AU  - Thomas Nelson Dale
AU  - George B. Richardson
AU  - Eugene Wesley Shaw
AU  - Alexander Deussen
AU  - Ernest F. Burchard
PY  - 1911
DO  - 10.3133/b470g
UR  - https://pubs.usgs.gov/publication/b470G
ID  - b470G
ER  -