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"I am Petrel"

"I am Petrel" (ca. 1972)

Unite and struggle to study Dazhai, strive with great effort and great changes for a bumper harvest

Unite and struggle to study Dazhai, strive with great effort and great changes for a bumper harvest (1976, December)

Realize agricultural electrification

Realize agricultural electrification (1960, January)

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