edited by Pavlos Kanaroglou, Eric Delmelle and Antonio Páez
Routledge, 2018
Buku Teks
Yeh, Stephen H.K.
UNESCO, 1990
Buku Teks
Johnson, James H.
Pergamon Press, 1972
Buku Teks
Mather, P.M.
John Wiley & Sons, 1976
Buku Teks
Mills, Gordon E.
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Buku Teks