Tom Thomas Tullis

Tom Thomas Tullis Measuring the user experience : collecting, analyzing, and presenting usability metrics

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Tom Thomas Tullis

Measuring the user experience : collecting, analyzing, and presenting usability metrics

Larry Davis Curtiss Army Hawks in action

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Larry Davis

Curtiss Army Hawks in action

Hans-Heiri Stapfer Su-25 Frogfoot in Action

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Hans-Heiri Stapfer

Su-25 Frogfoot in Action

Don Greer MiG-17 Fresco in action

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Don Greer

MiG-17 Fresco in action

Jerry Scutts Mosquito in Action 2

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Jerry Scutts

Mosquito in Action 2