SEVENTH A1H1UAL CONFERENCE Oil I1DDIAIT AFFAIIiS. ... This year the subject for study is aquot;Tourisn and Commercial Eevelcpnentaquot; . ... SC7IET ENCYCLOPAEDIA ON MICROFILM: Tho various deletions, omissions, additions, anendnents to the various editions of ... fom one of the nost accurate guides to the changes in Soviet policy. However, it is very difficult tc get ccnpletc sets of this Encyclopaedia.