Archive
Scientific foreign trips
Scientific trip to Bulgaria (1980)
Telegram, P. Burnev->A.P. Ershov, 08.08.1980
Covering note, P. Burnev->A.P. Ershov, 12.08.1980
Letter, L. Iliev->A. S. Alekseev, 26.08.1980
Working Notes, 26.10.1980
Working Notes, 27.10.1980
Theses (draft), 28.10.1980
Working Notes
Programme, 25.10.1980-01.11.1980
Plan and List
Report, 20.11.1980(?)
Tourist information, 26.10.1980-06.11.1980

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