64с

1925г

IMPERIAL INSTITUTE ;^0/

MONOGRAPHSt)N MINERAL RESOUR WITH SPECIAL REFERENCE TO THE BRITISH EMPIRE

PREPARED UNDER THE DIRECTION OF THE MINERAL RESOURCES COMMITTEE OF THE IMPERIAL INSTITUTE

BISMUTH ORE&

ROBERT ALLEN, M.A. (Cantab.), B.Sc. (Lond.), M.Inst.M.M.

Scientific and Technical Department, Imperial Institute

with a map

'2 ^. i

c

S.L

LONDON

JOHN MURRAY, ALBEMARLE STREET, W.