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3 results for: showing six circular grayscale photomicrographs arranged

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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...