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 18 · column 3 of 6 · from the scan, no model involved
lawn by increasing water, nutrient and oxygen movement in the soil. It also helps improve rooting and prevents run-off. Until now, aeration was hard work, expensive, time-consuming and messy.
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