By Cotgrove Stephen   Duff Andrew   in Education + Training

ISSN:0040-0912|23|2|58-59

Emerald Group Publishing Ltd‎(1993)‎

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By Williams Justin P.   Duff Andrew I.   Andrefsky William   in Lithic Technology

ISSN:0197-7261|38|1|3-16

Maney Publishing‎(2013)‎

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A Globally Integrated Climate Policy for Canada‎

By Steven Bernstein   Jutta Brunee   David Duff   Andrew Green  

ISBN:9781442683969

University of Toronto Press‎(2007)‎

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