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  1. First Nations bracelet from the northwest coast of British Columbia collected by George Mercer Dawson in the 1800s First Nations bracelet from the northwest coast of British Columbia collected by George Mercer Dawson in the 1800s

    First Nations bracelet from the northwest coast of British Columbia collected by George Mercer Dawson in the 1800s

    Peter D Geldart
    Petra Books
    04.12.2023

    In this booklet I present the details and context of a gold bracelet collected from the British C...

    Taschenbuch
    20,10 €
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  2. The Round Houses of 1959 designed by architect James Strutt The Round Houses of 1959 designed by architect James Strutt

    The Round Houses of 1959 designed by architect James Strutt

    Peter D Geldart
    Petra Books
    01.01.2025

    James W. Strutt (1924-2008) was an architect in the Ottawa, Canada region practicing as Gilleland...

    Taschenbuch
    27,10 €
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  3. The Round Houses of 1959 designed by architect James Strutt The Round Houses of 1959 designed by architect James Strutt

    The Round Houses of 1959 designed by architect James Strutt

    Peter D Geldart
    Petra Books
    01.01.2025

    James W. Strutt (1924-2008) was an architect in the Ottawa, Canada region practicing as Gilleland...

    Gebunden
    49,30 €
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  4. On Reflection (Two) On Reflection (Two)

    On Reflection (Two)

    Peter D Geldart
    Petra Books
    01.03.2025

    Specular and diffuse reflection.

    Taschenbuch
    9,50 €
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  5. Light Reflection and the Observer Light Reflection and the Observer

    Light Reflection and the Observer

    Peter D Geldart
    Petra Books
    01.01.2025

    The author considers such taken-for-granted phenomena as moonlight on water and sunlight snow to ...

    Taschenbuch
    10,00 €
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  6. Duplicate image at moonset Duplicate image at moonset

    Duplicate image at moonset

    Peter D Geldart
    Petra Books
    18.04.2025

    The cause of the inferior image below moonsets on a clear horizon is considered: refraction, refl...

    Taschenbuch
    10,00 €
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  7. The Moon as seen from different latitudes The Moon as seen from different latitudes

    The Moon as seen from different latitudes

    Peter D Geldart
    Petra Books
    01.05.2025

    Why does the Moon's altitude and azimuth vary from night to night? The author presents charts of ...

    Taschenbuch
    10,00 €
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  8. El observador y la reflexión de la luz El observador y la reflexión de la luz

    El observador y la reflexión de la luz

    Peter D Geldart
    Petra Books
    16.07.2025

    El observador y la reflexión de la luz

    Taschenbuch
    10,00 €
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  9. 観察者と光の反射 観察者と光の反射

    観察者と光の反射

    Peter D Geldart
    Petra Books
    21.07.2025

    大きな湖畔に立って、澄み切った水平線を眺めているところを

    Taschenbuch
    10,00 €
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  10. L’observateur et la réflexion de la lumière L’observateur et la réflexion de la lumière

    L’observateur et la réflexion de la lumière

    Peter D Geldart
    Petra Books
    21.07.2025

    Imaginez-vous debout sur la rive d'un grand

    Taschenbuch
    10,00 €
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