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APA ZitierstilTonkov, N. (2013). Geofizični metodi v archeologija: Optimizirane na metodikata za proučvane na nadgrobni mogili = Geophysical methods in archaeology : Optimization of technique for prospection of burial mounds. Sofija: Association of Bulgarian Archaeologists.
Chicago ZitierstilTonkov, Nikola. Geofizični Metodi V Archeologija: Optimizirane Na Metodikata Za Proučvane Na Nadgrobni Mogili = Geophysical Methods in Archaeology : Optimization of Technique for Prospection of Burial Mounds. Sofija: Association of Bulgarian Archaeologists, 2013.
MLA ZitierstilTonkov, Nikola. Geofizični Metodi V Archeologija: Optimizirane Na Metodikata Za Proučvane Na Nadgrobni Mogili = Geophysical Methods in Archaeology : Optimization of Technique for Prospection of Burial Mounds. Sofija: Association of Bulgarian Archaeologists, 2013.