skos:altLabel | - Ballard, Robert
- Bob Ballard
- Dr Robert Ballard
- Dr Robert D Ballard
- Dr. Ballard
- Dr. Bob Ballard
- Dr. Robber Ballard
- Dr. Robert Ballard
- Dr. Robert D. Ballard
- Dr. Robert D. Ballard's
- Robert (Bob) Ballard
- Robert D. Ballard
- Robert D. Ballard, Ph.D.
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