Erevan [Yerevan], 1980 211 + [1] pp., 21cm., text in Armenian (with a second title page in Russian in Cyrillic script, and with an extensive summary in English: "The study of David the Invincible on Logic" (pp.195-208)), publisher's hardcover in grey cloth with gilt lettering, dustwrapper, text is clean and bright, cfr. OCLC 749597938, good condition, X116780