A New Occupational Coding System for 19th Century Heavy Industrial WorkersA New Occupational Coding System for 19th Century Heavy Industrial Workers
Version 1 : Iron and Steel, Coal Mining and Railroads
Reference Electronic Database
by Richard G. Healey, Ph.D.
Department of Geography
University of Portsmouth, England
(Email : Richard.Healey@port.ac.uk)
Copyright 2010
ISBN : To Be Confirmed
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