<link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2? family=Montserrat:wght@100;200;300;400;500;600;700;800;900&family=Roboto+Slab:wght@100;300;400;500;600;800;900&display=swap" rel="stylesheet"> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2?family=Roboto+Slab:wght@100;300;400;500;600;800;900&display=swap" rel="stylesheet"> No. 3(100) (2021): Bulletin of Zhetysu University named after I.Zhansugurov | BULLETIN OF ZHETYSU UNIVERSITY NAMED AFTER I.ZHANSUGUROV