Henk Hietbrink

Shape of the F at the wall of the camera obscura
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Henk Hietbrink
Pieter van Schooten (Hs 441)
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Henk Hietbrink
Fortification in the Netherlands in the 17th centur
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Henk Hietbrink
Pieter van Schooten: handschrift BPL 1013
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Henk Hietbrink
Samuel Marolois
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Jean Errard
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Simon Stevin: Verheven Teyckening
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Henk Hietbrink
Comparison of forms of 17th century fortifications
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Henk Hietbrink
Simon Stevin: Grontteyckening
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Henk Hietbrink
Shape of the Eclipse
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Henk Hietbrink
Reflection of light in flat, circular and elliptical mirrors
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Henk Hietbrink
Declinerende verticale zonnewijzer
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Henk Hietbrink
MnatsanKanyan
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Henk Hietbrink
Selim
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Henk Hietbrink
Haghartzin
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Henk Hietbrink
Astavatsankal
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Henk Hietbrink
L reduction
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G reduction
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D reduction
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C reduction
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Diamond
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Diamond 2
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Half Dome
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L
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Henk Hietbrink

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