00520nam a22001697a 450000500170000000800410001701000100005801100100006802000180007803500100009608200120010624501580011826000080027659000420028490100070032699900170033320220127140340.0010129d1998    enk     r     00110 eng d  a83382  a84354  a1 84014 084 4  a9487404a338.16200aEconomics of agro-chemicals :ban international overview of use patterns, technical and istitutional determinants, polices and perspectivesc/ed. by G.A.  c199  aCONVERSIONb10c20130109lUCH01h1346  aBK  c83382d83382