64с.

v

X

bfä) THF PUBLICATIONS OF THE BUREAU O

DEPARTMENT OF THE INTERIOR.

FRANKLIN K. LANE, Secrbiary. -

PUREAU OF MINES

VAN. H. MANNING, DIRE'

August, 1918.

'43

A. limited edition of each publication of the Bureau of Mines is printed for free distribution to residents of the United States and its possession "*HBeea-use of the demand from within the United States and the limited supply, the Bureau of... (Información más detallada)