Letter Organizing Committee of School on algebra and logic (23.09 - 03.10.1986, resort "Drujba" near Varna) officialy invites the addressee to be a lector.
Accomodation and living expenses will be payed by organizers. Date: 02.12.1985- 24.12.1985 Original document language: Russian Authors: Lyubomir Iliev Organizations: United Center of Mathematics and Mechanics Addressee: Andrei Petrovich Ershov
