WRIGHLEY, G. Tropical agriculture#the development of production#Gordon Wrighley. Longman.
Lua i Stíl Chicago (17ú heag.)WRIGHLEY, Gordon. Tropical Agriculture#the Development of Production#Gordon Wrighley. Longman.
Lua MLA (8ú heag.)WRIGHLEY, Gordon. Tropical Agriculture#the Development of Production#Gordon Wrighley. Longman.
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