%A Symposium of the International Association of Agricultural Economists %A Wossink, G. A. A. %A Van Kooten, G. C. (Gerrit C.) %A Peters, G. H. %T Economics of agro-chemicals : an international overview of use patterns, technical and institutional determinants, policies and perspectives : selected papers of the Symposium of the International Association of Agricultural Economists held at Wageningen, The Netherlands, 24-8 April 1996 %I Ashgate %D 1998 %U https://ci.nii.ac.jp/ncid/BA38210145