31899539 – Tripelfuge (4st.) [XI]

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31899541 – Spiegelfuge recto (4st.) [XII]

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31899543 – Spiegelfuge inverso (3st.) [XIII]

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31899544 – Spiegelfuge recto (3st.) [XIII]

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31899545 – Canon al roverscio et per augm. (XIV)

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