Isidor din Sevilla, W. M. Lindsay (Editor)
Isidori Hispalensis episcopi Etymologiarum sive Originum : Libri XX.
Oxford University Press, 1971. Oxford Classical Texts. Reprint of 1911 edition. Two volumes. (v. 1. Books I-X
v. 2. Books XI-XX and index) 
Each volume, measuring approximately 5.25" x 7.5", is bound in dark blue cloth, with stamped gilt lettering to spine. Books are like new. Dust jackets display very light shelfwear.
""Etymologiae" (Latin for 'Etymologies'), also known as the "Origines" ('Origins'), usually abbreviated Orig., is an etymological encyclopedia compiled by the influential Christian bishop Isidore of Seville (c. 560–636) towards the end of his life. "Etymologiae" summarized and organized a wealth of knowledge from hundreds of classical sources; three of its books are derived largely from Pliny the Elder's "Natural History".