2 Barcelona Firms Bombed

President Virgilio Barco of Colombia defused a potential dispute with the United States by approving an extradition treaty that the Colombian Supreme Court had ruled unconstitutional on a technicality. Barco signed a 1980 law that ratified the September, 1979, treaty, used mainly for suspects sought for drug trafficking. The Supreme Court had ruled Friday that the law was not valid because it was signed by a minister and not by the president. Nearly 20 Colombians have been extradited to the United States since the murder of Justice Minister Rodrigo Lara Bonilla in April, 1984, a killing blamed on drug traffickers.