TARRANT, J. R. (1974). Agricultural geography: Problems in modern geogrgaphy. David and Charles.
Lua i Stíl Chicago (17ú heag.)TARRANT, John R. Agricultural Geography: Problems in Modern Geogrgaphy. Abbot: David and Charles, 1974.
Lua MLA (9ú heag.)TARRANT, John R. Agricultural Geography: Problems in Modern Geogrgaphy. David and Charles, 1974.
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