Grigoryan, A.V. “INFLUENCE OF THE HRAZDAN RIVER POLLUTION ON MORPHOFUNCTIONAL FEATURES OF $PELOPHYLAX~RIDIBUNDUS$ INTESTINE”. Proceedings of the YSU B: Chemical and Biological Sciences, vol. 51, no. 3 (244), Nov. 2017, pp. 166-70, doi:10.46991/PYSU:B/2017.51.3.166.