Bear Trap corundum deposit, Madison County, Mont. /
by John B. Hopkins and John Taber.

APA Citation

Hopkins, J. B., Taber, J. (1947). Bear Trap corundum deposit, Madison County, Mont.. [Washington, D.C.]: United States Bureau of Mines.

MLA Citation

Hopkins, John B, and John Taber. Bear Trap Corundum Deposit, Madison County, Mont.. [Washington, D.C.]: United States Bureau of Mines, 1947.

Warning: These citations may not always be complete (especially for serials).