Armstrong, A. T.
Handbook on small mines / compiled by A.T. Armstrong. - [Adelaide] : Dept. of Mines and Energy, South Australia, 1978. - 206 p. : ill. (part col.) ; 21cm.
072435378X
Mining engineering.
622
Handbook on small mines / compiled by A.T. Armstrong. - [Adelaide] : Dept. of Mines and Energy, South Australia, 1978. - 206 p. : ill. (part col.) ; 21cm.
072435378X
Mining engineering.
622