MIGRATION AND SETTLEMENT IN BULGARIA.PHILIPOV D.1978; INTERNATION. INST. APPL. SYST. ANAL., RES. MEMOR.; AUT; DA. 1978; VOL. 78; NO 36; (105 P.); BIBL. 4 P.Serial Issue

MIGRATION AND SETTLEMENT. XII: BULGARIAPHILIPOV D.1981; RES. REP.-INT. INST. APPL. SYST. ANAL.; ISSN 0378-9004; AUT; DA. 1981; NO 21; 123 P.; BIBL. 23 REF.Serial Issue

MIGRATION AND NATURAL INCREASE IN THE GROWTH OF CITIESKEYFITZ N; PHILIPOV D.1982; RES. REP.-INT. INST. APPL. SYST. ANAL.; ISSN 0378-9004; AUT; DA. 1982; NO 2; PP. 287-299; BIBL. 4 REF.Serial Issue

Migration and natural increase in the growth of citiesKEYFITZ, N; PHILIPOV, D.Geographical analysis Columbus. 1981, Vol 13, Num 4, pp 287-299Article

Migration and Settlement in Bulgaria in IIASA Issue on migration and settlementPHILIPOV, D; ROGERS (A.) ed.Environment and planning A London. 1978, Vol 10, Num 5, pp 593-617Article