PURE WHITE WATER LILY (NYMPHAEA CANDIDA J.PRESL &amp; C.PRESL) AS ONE OF THE COMPONENTS OF THE AQUATIC ECOSYSTEMS OF THE STATE NATIONAL NATURAL PARK "KOKSHETAU" (NORTHERN KAZAKHSTAN)
Manaš Ķozybaev atyndaġy Soltùstìk Ķazaķstan universitetìnìņ habaršysy