Roberta G. Williams (Williams, Roberta G.)

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  Echocardiographic Diagnosis of Cardiac Malformations
  by Stephen Sanders, Robert A. Williams, Frederick Z. Bierman
  Hardcover, Lippincott Williams & Wilkins, ISBN 0316941328 (0-316-94132-8)
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  Echocardiographic Diagnosis of Congenital Heart Disease
  by Roberta G. Williams, Charles R. Tucker
  Hardcover, Little, Brown, ISBN 0316943517 (0-316-94351-7)
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  The Lung and Its Disorders in the Newborn Infant
  by Barry D. Fletcher, Mary Ellen Avery, Roberta G. Williams
  Hardcover, Saunders, ISBN 0721614620 (0-7216-1462-0)