파일:Willebrord Snellius.jpgde:Willebrord van Roijen Snell es:Willebrord Snel fr:Willebrord Snell io:Willebrord Snell it:Willebrord Snell nl:Willebrord Snellius ja:ヴィレブロルト・スネル he:וילברורד
파일:Willebrord Snellius 2.jpg[1] [2] Scientist: Snellius, Willebrord (1580 - 1626) Discipline(s): Mathematics ; Physics ; Astronomy Original Dimensions: Graphic: 10.3 x 7.5 cm / Sheet:
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