insects

Resolutely cut off the bloody and criminal hand of the American aggressor that spreads germs!

Resolutely cut off the bloody and criminal hand of the American aggressor that spreads germs! (1951-1952)

Everybody must take precautions against epidemics to smash the germ warfare of American imperialism!

Everybody must take precautions against epidemics to smash the germ warfare of American imperialism! (1952)

Important methods to increase agricultural production

Important methods to increase agricultural production (1956, February)

Develop health protection for the people

Develop health protection for the people (1956, February)

You Longgu - Everybody get to work to destroy the Four Pests

Everybody get to work to destroy the Four Pests (1960, March)

Everybody must get to work to exterminate flies!

Everybody must get to work to exterminate flies! (Early 1970s)

Application and physical harm done by bacteriological devices

Application and physical harm done by bacteriological devices (1971)

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