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Books of the Week

Erratum: In Science Fields: Plan to Develop Better Beryl Recovery

Erratum: X-Rays at the Front

Erratum: Arctic Floating Islands

Erratum: In Science Fields: Antihistamines Cause Lazy Feeling but Not Inefficiency

Erratum: Chain Reaction Produces Abnormal Gland Activity

Twin Systems of Stars Betray Mass of Universe

New Machines and Gadgets

Volume Information

Front Matter

Anti-Radiation Factor

Star’s Age Sets Its Speed