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Change, adjustment and the role of specific experience : evidence from Sri Lankan rice farming
Ekanayake, S. A., (1986)
Wohlfahrtseffekte der Entwicklung und Einführung neuer Reissorten in Brasilien
Ernstberger, Josef, (1989)
Rice and man : agricultural ecology in Southeast Asia
Hanks, Lucien M., (1972)
Changing face of Colombo : 1505 - 1972 ; covering the Portugese, Dutch and British period
Brohier, Richard L., (1984)