“THE DEFINITION SECOND ZONE OF SANITARY PROTECTION OF KARBI AND GHAZARAVAN FRESH WATER INTAKES”, Proc. YSU C: Geol. Geogr. Sci., vol. 54, no. 1 (251), pp. 17–22, Apr. 2020, doi: 10.46991/PYSU:C/2020.54.1.017.