Name the Partner which is in 1979, and Opponents in the final of heinz günthardt bob hewitt?
CREATE TABLE "wins_60" (
  "outcome" text,
  "date" real,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents_in_the_final" text,
  "score_in_the_final" text
);
SELECT "partner" FROM "wins_60" WHERE "date"=1979 AND "opponents_in_the_final"='heinz günthardt bob hewitt';