Klesius, M. (2002 September). The state of the planet. National Geographic, 202, 103-115.
Klesius, M. The state of the planet. National Geographic, 202, 103-115, September 2002.
Klesius, M. (2002, September). The State of the Planet. National Geographic 202, 103-115.
Klesius, M. The State of the Planet. National Geographic, 202,103-115, September, 2002.
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