فهرس المقالات Bagher Morsal المقاله 1 - Assessing the risk of environmental pollution caused by tourism activities (recreation - sports) in natural environments of Shahrood County 10.22034/ap.2020.1904167.1072 Sepideh Hosseini Dinani SEYED MOSTAFA TAYEBI SANI Bagher Morsal Ali fahiminejad Anthropogenic Pollution , العدد 1 , السنة 4 , بهار 2020