Ivanov, Sabin. “DETERMINING THE SCALE OF A TOPOGRAPHIC MAP: DETERMINING THE SCALE OF A TOPOGRAPHIC MAP”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 13, no. 1 (March 19, 2023): 41–45. Accessed December 6, 2025. https://jsar.ftn.shu.bg/index.php/jsar/article/view/237.