Archive
Scientific foreign trips
Files on cancelled trips
Cancelled trip to Denmark, 1979
Telegram, D. Bjorner->A.P. Ershov, 17.12.1979
Telegram, A.P. Ershov->H. F. Sherwood, 04.01.1980
Telegram, A.P. Ershov->D. Bjorner, 10.01.1980
Telegram, D. Bjorner->A.P. Ershov, 21.01.1980
Telegram, A.P. Ershov->H. F. Sherwood, 29.01.1980
Telegram, D. Bjorner->A.P. Ershov, 30.01.1980
Letter, A.P. Ershov->D. Bjorner, 29.01.1980

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