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.
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