US: temporary delays — postal services aligning new import rules, 
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By Green Dan , …
Dan Green, Clive Gifford, 2016
Explore our planet's rocky wonders through this visual encyclopedia. It showcases Earth's minerals, gems, shells, and fossils with over 1,000 detailed photographs. Learn to distinguish between different types of rocks and gems, such as sedimentary from sandstone, and metamorphic from marble. The book details the unique qualities of each material and their applications in art, industry, architecture, and science.