na INLIS000000000004261 Ind 0010-1118004261 Crop protection information on international perspective : proceedings of the International Crop Protection Information Workshop, held at CAB International, Wallingford, UK April 1989 INTERNATIONAL CROP PROTECTION INFORMATION WORKSHOP (1989: Wallingford) by K.M. Harris; P.R. Scott Wallingford CAB International 1989 xii; 321 p.: ill.; 22 cm. xii; 321 p.: ill.; 22 cm. 632.9INTc 632.9 PLANT PROTECTION INFORMATION SYSTEMS 930/94