Sembiring, S. A.; Sihaloho, H.; Hutauruk, J.; Nainggolan, M. F.; Sagala, P. Implementation of Subsidized Fertilizer Policy on Farmer Groups Based on the Regulation of the Minister of Agriculture Number 41 of 2021 in Percut Sei Tuan District, Deli Serdang Regency, North Sumatra Province, Indonesia. theijbm 2023, 11.