Wiles, T. L creator Sharp, D. G Matthews, G. A Dobson, Hans Al Alawi, Mamoon Ishfaque, Mohammed Food and Agriculture Organization of the United Nations text Rome Food and Agriculture Organization of the United Nations 2001- monographic v. : ill. ; 21 cm Vol. 1-3: "These guidelines were prepared by T.L. Wiles and D.G. Sharp, of T.L. Wiles and Associates Limited ... with the assistance of Professor G.A. Matthews ..."--Acknowledgements Vol. 4- : "These guidelines were prepared by Hans Dobson of the Natural Resources Institute, UK ... assistance was provided by Mamoon Al Alawi ... and Mohammed Ishfaque ..."--Acknowledgements Spraying and dusting in agriculture Spraying equipment Pesticides 632 FAU 2001 C151 Or. 9251047197 (v. 1) 9251047227 (v. 2) 9251047162 (v. 3) 925105245X (v. 4)