Abstract
Even at close range, discoveries in applied science and technological inventions are of value in predicting teh social effects that may come after them. In this article there are listed a number of discoveries and inventions reported during the year 1930 that may have significant influences. They are in the fields of medicine and public health, physics, engineering, aviation, agriculture, mechanical devices, biology, vitamins and ultra-violet rays, chemistry, and miscellaneous fields.
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