CREATE TABLE table_30408 ("Season" TEXT, "Mens Singles" TEXT, "Womens Singles" TEXT, "Mens Doubles" TEXT, "Womens Doubles" TEXT, "Mixed Doubles" TEXT)

Name the winners of the mens doubles in the season of 1963/64.
SELECT "Mens Doubles" FROM table_30408 WHERE "Season" = '1963/64'
SELECT "Mens Doubles" FROM "table_30408" WHERE "Season" = '1963/64'