Detailed result lists can be found on the "World Junior Athletics History" website.[1] An unofficial count yields the number of about 212 athletes from about 9 countries: Argentina (47), Bolivia (6), Brazil (58), Chile (33), Colombia (6), Ecuador (16), Paraguay (28), Peru (12), Uruguay (6).
Medal summary
Medal winners are published for men[2] and women[3]
Complete results can be found on the "World Junior Athletics History" website.[1]