photosynthetic-activity-and-accumulation-of-harvest-of-dry-mass-of-sugar-beet-on-mead-gray-soils-of-the-south-of-kazakhstan==>>photosynthetic-activity-and-accumulation-of-harvest-of-dry-mass-of-sugar-beet-on-mead-gray-soils-of-the-south-of-kazakhstanhttps://indexive.com/uploads/papers/pap_indexive15945589122147483647.pdf