Text ( visual ) : unmediated Some empirical estimates of forest amenity value / Guy Garrod, Ken Willis. -- Newcastle upon Tyne : Countryside Change Unit, Dept. of Agricultural Economics & Food Marketing, University of Newcastle upon Tyne , 1991. -- 17 p. : ill. ; 21 cm. -- (Countryside change working paper series ; working paper 13). -- "ESRC, Countryside Change Initiative" --- on cover ; Bibliography: p. 14-17. -- (BA36705996) ; https://ci.nii.ac.jp/ncid/BA36705996 Author Heading(s): Willis, K. G. (Kenneth George) ; Garrod, Guy ; Economic and Social Research Council (Great Britain) ; Countryside Change Initiative ; University of Newcastle upon Tyne. Countryside Change Unit