Detailed result lists can be found on the "World Junior Athletics History" website.[2] An unofficial count yields the number of about 176 athletes from about 8 countries: Argentina (39), Brazil (34), Chile (38), Colombia (5), Ecuador (5), Paraguay (17), Peru (23), Uruguay (15).
Medal summary
Medal winners are published for men[3] and women[4]
Complete results can be found on the "World Junior Athletics History" website.[2]