Arms, Karen
Environmental science
Saunders College, 1990
 Buku Teks
Miller, G. Tyler [George Tyler], 1902-1988
Environmental science
Brooks / Cole Cengage Learning, 2010
 Buku Teks
Kaufmann, Robert K.
Environmental science
McGraw-Hill, 2008
 Buku Teks
Miller, G. Tyler [George Tyler], 1902-1988
Environmental science
Cengage Learning, 2016
 Buku Teks
Kaufmann, Robert K.
Environmental science
McGraw-Hill, 2008
 Buku Teks SO