Wajs , E. (2006). Записки Горного института, 167(2), 177-178. извлечено от https://pmi.spmi.ru/pmi/article/view/7990

Wajs , E. (2006). Adaptation of geographical information system in net water-supply and sewage enterprises. Journal of Mining Institute, 167(2), 177-178. Retrieved from https://pmi.spmi.ru/pmi/article/view/7990