Dahlberg, E. H.
Small-scale gold mining : a manual based on experience in Suriname / E. H. Dahlberg. - London : Intermediate Technology, 1984. - 51 p. : ill.
90052094
Gold mines and mining.
Small-scale gold mining : a manual based on experience in Suriname / E. H. Dahlberg. - London : Intermediate Technology, 1984. - 51 p. : ill.
90052094
Gold mines and mining.