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eng
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Uk
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Balla, Bálint
Keil, Bálint
A Megújulás útján, 1976 (a.e.)
v. 1, t.p. (Balla Bálint)
Soziologie über die Grenzen, c2003:
t.p. (Prof. Dr. Dr. h.c. Bálint Balla) p. 576 (b. 07-07-1928 in Budapest as Bálint Keil)