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L.R. Humphreys
Melbourne University Press 2000
Available at 1 libraries
Cambridge University Press 1997
Available at 6 libraries
Longman Scientific & Technical 1994
U.S
Available at 4 libraries
Cambridge University Press 1991
Available at 5 libraries
L.R.ハンフリーズ著 ; 北村征生 [ほか] 訳
農山漁村文化協会 1989.3
Available at 46 libraries
Longman Scientific & Technical , Wiley 1987 2nd ed. Intermediate tropical agriculture series
: Wiley
Available at 8 libraries
Macmillan 1981
L. R. Humphreys
Longman 1978 Intermediate tropical agriculture series