“ANALYSIS OF THE REASONS FOR THE PRODUCTION OF SECONDARY GASES AND THEIR PHYSICAL-CHEMICAL PROPERTIES IN EXISTING CHEMICAL INDUSTRY ENTERPRISES IN THE FERGANA VALLEY” (2023) American Journal of Technology and Applied Sciences, 13, pp. 14–20. Available at: https://americanjournal.org/index.php/ajtas/article/view/995 (Accessed: 12 October 2025).