Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 14 · column 2 of 9 · from the scan, no model involved

Dermatology Pathology Oral & Maxillofacial Family Practice Family Practice Pathology Family Practice Otolaryngology Pathology Pathology Anesthesiology Pathology Family Practice Urology Otolaryngology Pathology Urology Ophthalmology Family Practice Pediatrics Dermatology Anesthesiology Pathology Otolaryngology Pathology Otolaryngology Oral & Maxillofacial
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