-
1
المؤلفون: Roumiana Metcheva, Michaela Beltcheva, Stoyan Goranov, Elena Georgieva, Tanyo Michev, Yordan Yankov, Lyubomir Profirov, Lyubomir Kenderov, Borislav Naumov, Petar Petrov, Plamen Mitov
المصدر: Forum geografic. :152-161
مصطلحات موضوعية: Global and Planetary Change, Geography, Planning and Development, Earth-Surface Processes