Text ( visual ) : unmediated Commentarivs in Clavdii Ptolemaei Harmonica / Porphyrivs ; edidit Massimo Raffa ; exemplar emendavit Andrew Barker. -- Berlin : De Gruyter , c2016. -- xliv, 323 p. : ill. ; 24 cm. -- (Bibliotheca scriptorum Graecorum et Romanorum Teubneriana ; BT 2020). -- Includes bibliographical references and indexes. -- ISBN 9783110425161 ; (BB22680996) ; https://ci.nii.ac.jp/ncid/BB22680996 Other Title(s): Commentarius in Claudii Ptolemaei Harmonica. -- Author Heading(s): Porphyrios, ca.ca. 305 ; Raffa, Massimo ; Barker, Andrew. -- Classification(s): LCC : ML168.P87 ; DC23 : 781. -- Subject Heading(s): LCSH : Ptolemy, active 2nd century. Harmonics -- Commentaries ; LCSH : Harmonics (Music) -- Early works to 1800