'Clavius', (1538-1612), 1830. Creator: Unknown.

'Clavius', (1538-1612), 1830. Creator: Unknown.

2-720-808 - The Print Collector/Heritage Images

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'Clavius', (1538-1612), 1830. Christopher Clavius (1538-1612) Jesuit German mathematician and astronomer, modified the proposal for the Gregorian calendar a From "Biographical Illustrations", by Alfred Howard. [Thomas Tegg, R. Griffin and Co., J. Cumming, London, Glasgow and Dublin, 1830]

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