Discus Harrowianus
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Societas fabricatrix laminarum discorum crateris, distributor partium crateris discorum Maschio
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Lamina discoidali, discus crateris, XL034, XL041
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Laminae discoideae 32″ 810X10, laminae crateris 560X6
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Laminae Disci Incisae 660×6
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Laminae Disci Incisae 810×10
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Lamina discoidea, discus crateris, discus undulatus
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Lamina discoidali, discus crateris, XL034, XL041
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Laminae crateris discoidali machinarum agriculturalium, laminae crateris incisae ad usum gravem, accessiones machinarum aratoriarum, resistentes detritioni et durabiles.
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Laminae discoideae incisae 4 foramina, lamina discoidea 460×4, lamina discoidea 510×5, lamina discoidea 560×6