STUDY OF THE INFLUENCE OF NITRIC ACID ENRICHMENT OF PHOSPHORITES OF THE CENTRAL KYZYLKUM ON THE PROCESS OF OBTAINING PHOSPHORUS-CONTAINING FERTILIZERS BASED ON THEM. ijasr [Internet]. 2023 Jun. 30 [cited 2025 Jul. 26];3(06):302-1. Available from: https://sciencebring.com/index.php/ijasr/article/view/299