"Leonard Ross Humphreys" . "Agrarwissenschaftler, Australien Leonard Ross Humphreys" . "I.R" . "L.R Humphreys" . . . "Humphreys, L. R. (Leonard Ross)" . . "I.R Humphreys" . . "Roma: FAO." . "L. R." . "Humphreys"@fr-FR . "Rural economist, Australia Leonard Ross Humphreys" . . "L. R" . "Ross" . "Leonard" . "L.R. Humphreys"@fr-FR . . . "Leonard Ross" . . . "Humphreys, Leonard Ross Economiste rural, Australie" . "Humphreys, Leonard Ross Agrarwissenschaftler, Australien" . . "R."@en . "Humphreys"@en . "L.R" . "Lomdon: Longman." . "1927" . "L. R Humphreys" . "L. R. Humphreys"@en . "L. R Humphreys"@ja-JP . "L. R ハンフリーズ" . . "L."@en . "L. Ross Humphreys"@en . "L. Humphreys" . "Leonard Ross Humphreys"@de-DE . "Humphreys, Leonard Ross Rural economist, Australia" . "L. R. Humphreys" . "ハンフリーズ" . "Economiste rural, Australie Leonard Ross Humphreys" . . .