By HARPER R.J.   in Management Decision

ISSN:0025-1747|3|1|37-39

Emerald Group Publishing Ltd‎(1969)‎

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By Andrews J.O.   Tingen M.S.   Waller J.L.   Harper R.J.   in Preventive Medicine

ISSN:0091-7435|33|5|415-421

Academic Press‎(2001)‎

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By Ryan P.J.   Harper R.J.   Laffan M.   Booth T.H.   McKenzie N.J.   in Forest Ecology and Management

ISSN:0378-1127|171|1|133-152

Elsevier‎(2002)‎

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