Dimitrowa, P. Statistical Reference Book of the Republic of Bulgaria,
Statistical Publ. a. Printing House, 1996, 164 p., 0861-0576, 1313-9436.
Dimitrowa, P. .
Statistical Reference Book of the Republic of Bulgaria.
Sofia: Statistical Publ. a. Printing House, 1996, 164 p., 0861-0576, 1313-9436.
Dimitrowa, P. (1996)
Statistical Reference Book of the Republic of Bulgaria,
Sofia: Statistical Publ. a. Printing House, 164 p., 0861-0576, 1313-9436
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