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Archaeologists Begin Excavation of Maya Cities

Violins

A Pin Falls

Astronomers Debate Einstein’s Shift of Solar Spectrum

The Astronomy of the Atom

An Unfinished Paper

Plant Explorer Finds New Barleys and Wheats

Two Types of Temperament

Important Finds at Ur of Chaldees

Research for Better Lighting Inaugurated

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Pure Vitamin Isolated for First Time