YUGOSLAV RETAIL PRICES UP 7.0 PCT IN MARCH Yugoslav retail prices in March rose 7.0 pct from February, to stand 93.2 pct higher than in March 1986, Federal Statistics Office (FSO) figures show. In February, retail prices rose 7.2 pct from January to stand 91.6 pct higher than in February 1986. The cost of living, which includes rents and costs such as utilities and transport, was up 7.8 pct in March from February to stand 94.8 pct higher than in March 1986, the FSO said. In February the cost of living increased 7.3 pct from January and stood 93.6 pct higher than in February 1986.