A covering letter for the following documents and these documents themselves: a) short unconfirmed Minutes of the 10th Meeting of the Working Group; b) Informal Minutes of this meeting published as a booklet; c) a list of working documents referred to in the latter.

with Announcement and the list of invitad participants (to be extended according to the enclosed requirements)

of the 11th Meeting of the Working Group in two forms: a short text and a booklet containing the full Informal Minutes. A list of working documents, referred to in the latter, and the extra mailing list of the Working Group are attached.

A covering letter for the following documents and those documents themselves: a) short unconfirmed Minutes of the 12th Meeting of the Working Group; b) Informal Minutes of this meeting published as a booklet; c) a list of working documents referred to in the Informal Minutes.

of the 13th Meeting of the Working Group in two forms: a short confirmed text and a booklet containing the full Informal Minutes. A list of working documents, referred to in the latter, is attached.

for the Congress.

on a demonstration panel of the Integrated System Prototype of Pattern Information Processing System (PIPS): booklets, demo schedules and guides.

on the IFIP 80 Congress. A manuscript.

on spreading information about IFIP 80 Congress.

A reservation has been made in an Amsterdam hotel for A.P.Ershov, as a participant of the first meeting of the Program Committee.

A.P.Ershov is invited to attend the second meeting of the IFIP 80 Program Committee.

of scientific areas of the Congress activities.

got from Programming Committees of preceding IFIP Congresses.

of eventual reviewers.

Covering letter for hotel reservation forms to be completed by the participants of the PC meeting. A form is attached.

Description of IFIP'83 (9th World Computer Congress). 2nd announcement (March 1982)

of participant of the 9th World Computer Congress IFIP'83.

of a panel chairman A.Ershov.