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    local holding
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    local holding
    by Falkenhagen, Hans , 1949
    Book
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    online resource
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    online resource
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    local holding
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    local holding
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    online resource
    by Euler, Leonhard , 1769
    In collection: Dioptricae Pars ...
    E-Book
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    online resource
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    online resource
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    online resource
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    local holding
    Book
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