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Use "octavos" in a sentence
"Perhaps ten or fifteen years ago, they happened into a commercial trade show at the National Association of Pastoral Musicians and grabbed a few octavos that they dragged home to foist on unwilling congregations."
"The abridged London octavos (1758a, 1760) manage to provide some articulation through paragraphing; the Dublin octavo (1758b) does not."
"With his colleagues, he has produced over 15 collections of songs and octavos, and a wide range of liturgical materials."