Word: prevention
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Dates: during 1920-1929
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...Passed a bill to prevent monopolization of the air by radio broadcasting companies...
...Inflation must be stopped permanently in order to prevent a further exodus of capital from Germany...
...Iowa voted down two bills: one to prevent the use of the word physician by osteopaths, chiropractors and other cultists; the other limiting each druggist to the handling of 25 gallons of liquor per year...
Finally a serum, artificially made, is discovered. Injection of this serum will give immunity from cancer. Use of the serum in connection with an operation will prevent a reappearance of the disease...
...slew the machine 'round. With the motors in tandem, the thrust of the propellers is always at the centre of the plane; and with one motor completely out of commission, the aviator can keep on going, even though at a slower speed. The engines are carefully housed to prevent freezing. The fuselages are double-walled like a thermos bottle, with nonconducting material between the walls. A special dynamo provides electricity for heating devices to keep the crew warm in the enclosed cabin, and to prevent gasoline and oil from freezing...