What "the season one joined league" the club that had had 15 season this level?
Clubs Seasons at this level Settlements Season joined league Position in 1959–1960
1960–61 Primeira Divisão
17933459
text text text text text
2-17933459-2
Details of participants
Details of participants
Benfica 27 seasons Lisbon 1934–1935 1
Sporting CP 27 seasons Lisbon 1934–1935 2
Belenenses 27 seasons Lisbon 1934–1935 3
Porto 27 seasons Porto 1934–1935 4
Académica de Coimbra 26 seasons Coimbra 1949–1950 6
Vitória de Guimarães 17 seasons Guimarães 1958–1959 7
Atlético CP 15 seasons Lisbon 1959–1960 11
Barreirense 14 seasons Barreiro 1960–1961 Segunda Divisão
Sporting de Braga 13 seasons Braga 1957–1958 12
Sporting da Covilhã 12 seasons Covilhã 1958–1959 9
Lusitano de Évora 9 seasons Évora 1952–1953 10
CUF Barreiro 8 seasons Barreiro 1954–1955 5
Salgueiros 5 seasons Porto 1960–1961 Segunda Divisão
Leixões 4 seasons Matosinhos 1959–1960 8
SELECT Season joined league FROM table WHERE Seasons at this level = 15 seasons
15 seasons