Authorities are searching for a Park Slope woman missing since last Wednesday. Barbara Marable, 72, was last seen at her residence at 341 10th Street. She's described as 5'2" tall and approximately 150 pounds. Marable was last seen wearing a green sweat suit with black sneakers. Police say that she wears an alarm bracelet with number 268601. Anyone with information on her whereabouts is urged to contact Crimestoppers at (800) 577-TIPS.