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4 résultats pour : two circular grayscale photomicrographs

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Six microscopic enlargements of minerals, page, photomechanical print, Image 1 is obsidian, 2 is
LZT26B00_221

Six microscopic enlargements of minerals, page, ph...

Six microscopic enlargements of minerals, page, photomechanical print, Image 1 is augite, 2 is
LZT26B00_201

Six microscopic enlargements of minerals, page, ph...

Six microscopic enlargements of minerals, page, photomechanical print, Image 1 is nepheline, 2 is
LZT26B00_207

Six microscopic enlargements of minerals, page, ph...

Six microscopic enlargements of minerals, page, photomechanical print, Image 1, 2 and 3 is sulphur,
LZT26B00_199

Six microscopic enlargements of minerals, page, ph...