4,988 results within Topic Mineral

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Mineral

Naturally occurring usually inorganic substance that has a (more or less) definite chemical composition and a crystal structure

Eco-Museum Research Institute Tulcea

Eco-Museum Research Institute Tulcea

Eco-Museum Research Institute Tulcea

Eco-Museum Research Institute Tulcea

Eco-Museum Research Institute Tulcea

Eco-Museum Research Institute Tulcea

Public Library Pencho Slaveykov, Varna

Public Library Pencho Slaveykov, Varna