Biaxial Optics II
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1:09:48
Uniaxial Optics
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Biaxial Optics
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Intro to Optical Mineralogy
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What if all the world's biggest problems have the same solution?
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29:21
Cenozoic Tectonics
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10:36
Dieter Nuhr GENIALE Wahlempfehlung 📢 So PEINLICH ist die Politik 🤡
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2 Hours of Valse by Evgeny Grinko
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46:52