Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| District | Incumbent | Party | First elected | Result | Candidates |
| --- | --- | --- | --- | --- | --- |
| Pennsylvania 5 | Richard T. Schulze | Republican | 1974.0 | Re-elected | Richard T. Schulze (R) 67.2% Bob Burger (D) 32.8% |
| Pennsylvania 6 | Gus Yatron | Democratic | 1968.0 | Re-elected | Gus Yatron (D) 72.0% Harry B. Martin (R) 28.0% |
| Pennsylvania 7 | Robert W. Edgar | Democratic | 1974.0 | Re-elected | Robert W. Edgar (D) 55.4% Steve Joachim (R) 44.6% |
| Pennsylvania 9 | Bud Shuster | Republican | 1972.0 | Re-elected | Bud Shuster (R) 65.1% Eugene J. Duncan (D) 34.9% |
| Pennsylvania 17 | Allen E. Ertel | Democratic | 1976.0 | Retired to run for Governor Republican gain | George Gekas (R) 57.6% Larry Hochendoner (D) 42.4% |
Question:
What are the candidates in the district whose incumbent is Gus Yatron?
Answer:
Gus Yatron (D) 72.0% Harry B. Martin (R) 28.0%