De Blij, Harm J.
Concepts and regions in geography
John Wiley & Sons, 2005
Buku Teks
De Blij, Harm J.
Geography : regions and concept
John Wiley & Sons, 1971
Buku Teks
De Blij, Harm J.
Geography : Regions and concepts
John Wiley & Sons, 1981
Buku Teks
Davis, George H.
Structural geology of rocks and regions
Wiley, 2012
Buku Teks
De Blij, Harm J.
Geography : realms, regions, and concepts
John Wiley & Sons, 1994
Buku Teks