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1
Ghost horses
Washington, DC : National Geographic Society, 2002“…Skurzynski, Gloria. National parks mystery ;…”
First paperback edition
Format: Book
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2
The hunted
Washington, DC : National Geographic Society, 2000“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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3
Wolf stalker
Washington, D.C. : National Geographic Society, 2001; 1997“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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4
Cliff hanger
Washington, D.C. : National Geographic Society, 1999“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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5
Rage of fire
Washington, D.C. : National Geographic Society, 1998“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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6
Deadly waters
Washington, D.C. : National Geographic Society, 1999“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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7
The hunted
Washington, D.C. : National Geographic Society, 2001“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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8
Wolf stalker
Washington, D.C. : [Emeryville, CA] : National Geographic Society ; Distributed by Publishers Group West, 1997“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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9
Ghost horses
Washington, DC : National Geographic Society, 2000“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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10
The hunted : a mystery in Glacier National Park
Washington, D.C. : National Geographic Society, 2007“…Skurzynski, Gloria. National parks mystery ;…”
1st digest ed. pbk.
Format: Book
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11
Deadly waters. (Mysteries in our national parks, #4.)
Washington, D.C. : National Geographic Society, 1999“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book
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12
Wolf stalker. (Mysteries in our national parks, #1.)
Washington, D.C. : National Geographic Society, 1997“…Skurzynski, Gloria. National parks mystery ;…”
Format: Book