Grigg, D B
Agricultural systems of the world : An evolutionary approach - Cambridge, Cambridge University Press 1974 - 358 - Cambridge geographical studies .
0 521 20269 8
Agricultural systems- World/ Wet-rice cultivation- Asia/ Technical economic changes agriculture
630 GRI
100
Agricultural systems of the world : An evolutionary approach - Cambridge, Cambridge University Press 1974 - 358 - Cambridge geographical studies .
0 521 20269 8
Agricultural systems- World/ Wet-rice cultivation- Asia/ Technical economic changes agriculture
630 GRI
100