Ward, Barbara, author
Only one earth : the care and maintenance of a small planet
a pelican book, 1972
 Buku Teks
Geography, the media &​ popular culture
Jacquelin Burgess and John R. Gold.
Routledge , 2016
 Buku Teks
Botkin, Daniel B., author
Environmental science : earth as a living planet
John Wiley & Sons, 1995
 Buku Teks
Botkin, Daniel B., author
Environmental science : earth as a living planet
John Wiley & Sons, 2000
 Buku Teks
Botkin, Daniel B., author
Environmental science : earth as a living planet
John Wiley & Sons, 2003
 Buku Teks
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