By Hansen Bradley   Hansen Mary Eschelbach   in Business History

ISSN:0007-6791|50|6|714-727

Routledge Ltd‎(2008)‎

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By Koch F. Elliott   Hansen Bradley M.S.   in Monthly Notices of the Royal Astronomical Society

ISSN:0035-8711|416|2|1274-1283

Oxford University Press‎(2011)‎

Access to resources Favorite 8.403419