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The latest price of gold per ounce, gram, and kilogram using real-time interactive gold price charts. View the price of gold for different currencies around the world and various time periods.

EVERY day Peru's Machu Picchu, the Lost City of the Incas, is rediscovered by at least 1,000 tourists who are slowly destroying one of the wonders of the world. More people now come to this sacred ...

Abstract: Aiming at the problem of excessive steady-state error of electric spring with switchable smart load(SES), this paper introduces the concept and basic ...

The goal is to create a three-dimensional dialogue between a reader's senses and the book. "You can smell the paper, touch and feel it, all of which can be part of your reading experience," he says.