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- [21] CCD UBV(RI)KC\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${U\!B\!V\!(R\!I)}_{KC}$$\end{document} photometry of NGC 2323 and NGC 2539 open clusters Journal of Astrophysics and Astronomy, 2019, 40 (4)