Wills Kenneth G. Ed. Valuing environment & natural resource . (2 Vol Set) Wills Kenneth G. Ed.; Garrod Guy Ed. - UK Elgar 2012 - V1:xxvii;662p. . ISBN: 45864 Standard No.: 125384 Source: 32, 17/12/2014, Pioneer Book Distributors Textual Subjects--Topical Terms: Business Economics Dewey Class. No.: X:(G:55), Q2.1-2