Seamus Heaney · Faber & Faber, London · 1969
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New Mexico Literacy Project — Point of issue NMLP P-038531 for "Door into the Dark" by Seamus Heaney (https://newmexicoliteracyproject.org/id/point/p-038531, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).