Boltayev Elmurod Bekmurod ugli, and Sabirov Jo’raboy Marifbayevich. 2021. “ORGANIZATION OF OXYGEN THERAPY USING A NASAL MASK AND VENTURA MASK IN SEVERE PATIENTS WITH COVID-19 CORONA VIRUS INFECTION”. Emergent: Journal of Educational Discoveries and Lifelong Learning (EJEDL) 2 (08):6-10. https://doi.org/10.17605/OSF.IO/N26VB.