GROUP OF 10 WELCOMES LATEST G-7 AGREEMENT The Group of 10 developed nations issued a communique welcoming the reaffirmation of the Paris accord on currency stability by the Group of Seven leading industrial democracies yesterday. In the communique issued this morning, the G-10 said "prospects of member countries' economies would be improved by stability in the exchange rates of their currencies." The G-10 includes the group of seven - the United States, Canada, Britain, Japan, Italy, West Germany and France - plus Belgium, the Netherlands, Sweden and also Switzerland. Sources who attended the G-10 conference this morning said the reference to the latest G-7 agreement was especially added to the brief communique because currency stability will benefit all the G-10 members. The G-10 met briefly before the International Monetary Fund Interim Committee meeting scheduled for today. .