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Continue to ChatBIOGAS PRODUCTION FROM AGRICULTURAL WASTES - SEMICONTINUOUS ANAEROBIC-DIGESTION OF SUNFLOWER HEADS - https://avesis.metu.edu.tr/yayin/9a28d5d2-76c4-45fc-be15-568399fd5390/biogas-production-from-agricultural-wastes-semicontinuous-anaerobic-digestion-of-sunflower-heads