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APA Citation
Cong, C., Jianping, H., Qingkai, Z., Meng, Z., Yibai, L., Feng, N., & Guangqiao, C. (2021). research on the Scheduling of Tractors in the Major Epidemic to Ensure Spring Ploughing. Mathematical problems in engineering, 2021, . http://access.bl.uk/ark:/81055/vdc_100136723993.0x00005a