Organization

• The Noun Project

United States, 2010

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- Attribution ( CC BY 3.0 )

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Organization

• National Park Service

United States, 1982

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- Public Domain

Organization

• The Noun Project

United States, 2010

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- Attribution ( CC BY 3.0 )

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The Noun Project › Learn how to attribute

Designed by

• Scott Lewis

2010

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- Attribution ( CC BY 3.0 )

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Scott Lewis, from The Noun Project › Learn how to attribute

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• John Caserta

United States, 2011

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- Attribution ( CC BY 3.0 )

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John Caserta, from The Noun Project › Learn how to attribute

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• John O'Shea

Germany, 2012

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- Attribution ( CC BY 3.0 )

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John O'Shea, from The Noun Project › Learn how to attribute

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• Daniel Hickey

United States, 2012

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- Attribution ( CC BY 3.0 )

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Daniel Hickey, from The Noun Project › Learn how to attribute

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• Daniel Hickey

United States, 2012

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- Attribution ( CC BY 3.0 )

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Daniel Hickey, from The Noun Project › Learn how to attribute

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• Daniel Hickey

United States, 2012

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- Attribution ( CC BY 3.0 )

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Daniel Hickey, from The Noun Project › Learn how to attribute

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• Daniel Hickey

United States, 2012

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- Attribution ( CC BY 3.0 )

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Daniel Hickey, from The Noun Project › Learn how to attribute

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• Roman J. Sokolov

Russian Federation, 2012

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Videologin.net, from The Noun Project › Learn how to attribute