Geographia Polonica (1977) vol. 36, pp. 43-48 | Full text
The migrational movement are due to social-economic and historical-polit-ical reasons. The development of the migrational processes in Bulgaria are due to these two factors too. If the historical-political reasons have played an active part in the external migrations, then the greatest importance for the internal migrations during the capitalist and the socialist period have had the social-economic factors.
Ljubomir Dinev, Professor, Department of Geology and Geography, Sofia University, Bulgaria