How many types of Glasses are there.
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there are 2 types of glasses:
concave and convex
concave and convex
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Soda - lime glass.
Potash lime / Hard glass / Bohemian glass.
Lead glass / Flint glass.
Borosilicate glas / Pyrex glass / Jena glass.
Safety glass.
Potash lime / Hard glass / Bohemian glass.
Lead glass / Flint glass.
Borosilicate glas / Pyrex glass / Jena glass.
Safety glass.
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