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Transactions of the Institute of British Geographers > 48 > 2 > 408 - 424
Transactions of the Institute of British Geographers > 45 > 1 > 139 - 154
Annals of the New York Academy of Sciences > 1337 > 1 > 130 - 139
Transactions of the Institute of British Geographers > 48 > 2 > 408 - 424
Transactions of the Institute of British Geographers > 45 > 1 > 139 - 154
Annals of the New York Academy of Sciences > 1337 > 1 > 130 - 139