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A study of small scale coal mining with particular reference to the longwall system and its means of support

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1. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239436

Identifer	oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:239436
Date	January 1994
Creators	Roberts, Brian Hannay
Publisher	University of Southampton
Source Sets	Ethos UK
Detected Language	English
Type	Electronic Thesis or Dissertation