Handbook for prospectors /
Pearl, Richard Maxwell, 1913-
Handbook for prospectors / Richard M. Pearl. - 5th ed. - New York : McGraw-Hill , 1973. - viii, 472 p. : ill. ; 21 cm.
'A revision of Handbook for prospectors and operators of small mines, by M. W. von Bernewitz.'
0070490252
Prospecting.
Handbook for prospectors / Richard M. Pearl. - 5th ed. - New York : McGraw-Hill , 1973. - viii, 472 p. : ill. ; 21 cm.
'A revision of Handbook for prospectors and operators of small mines, by M. W. von Bernewitz.'
0070490252
Prospecting.