Name Wins which have Clas 350cc, and Year smaller 1973?
Year Class Team Points Wins
Werner Pfirter
16431762
real text text real real
2-16431762-2
Grand Prix motorcycle racing results
Grand Prix motorcycle racing results
1970 250cc Yamaha 0 0
1970 350cc Yamaha 0 0
1971 250cc Yamaha 9 0
1971 350cc Yamaha 33 0
1972 250cc Yamaha 28 0
1972 350cc Yamaha 17 0
1973 250cc Yamaha 20 0
1973 350cc Yamaha 17 0
SELECT SUM Wins FROM table WHERE Class = 350cc AND Year < 1973
350cc 1973