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Kill a Sparrow Campaign (Four Pests Campaign)

Kill a Sparrow Campaign (Four Pests Campaign). By Tom Lotozo. What Happened? . Elimination of the four pests (sparrows, mosquitoes, flies, and rats) was ordered From 1958-1962 in China. Effective?. Due to a dramatic loss of sparrows, a ecological imbalance occurred

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Kill a Sparrow Campaign (Four Pests Campaign)