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Features

Derelict Mines--A Peace Peril, The Hudson River Tunnel and more

The Submarine Situation

The Submarine with 12-inch Gun a Fact--and Some Other Facts

By C. H. Claudy

Industrial Cooperation as a Factor in Reconstruction

By Frank B. Gilbrethand and L. M. Gilbreth

Influenza—The Sphinx of Diseases

When we speak of the cause of a disease, we are guilty of an error. Any given disease has many causes

By Wade W. Oliver

Airplanes for the Transatlantic Flight

What Aircraft Constructors Are Doing Toward Making the Great Flight Possible

Cost of the New Three-Year Naval Program

Moving Up from Millions to Billions in Naval Estimates

Speeding Up the Drier

How an Operation Once Left to Sun and Wind Has Been Brought Within the Mechanical Field

The Current Supplement

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    Inventions New and Interesting - March 1, 1919

  • Recently Patented Inventions - March 1, 1919

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March 01, 1919

Think Outside the Gift Box