Akesson Norman B FAO Use of aircraft in agriculture Akesson Norman B; Yates Wesley E - Rome Food and Agriculture Organization 1974 - "xviii, 217p. Bib p. 209-17,Appendixp. 176-208" cm. Standard No.: 88922 Source: Reference Collections Subjects--Topical Terms: Agriculture Labour Dewey Class. No.: "X9(J):(D535), L4/UN"