Text ( visual ) : unmediated Method of musical art / by H.E. Wooldridge. -- 2d ed. / rev. by Percy C. Buck. -- pt. 1 ; pt. 2. -- London : Oxford University Press , 1929-1932. -- 2 v. : ill., facsims., music ; 23 cm. -- (The Oxford history of music ; ; Vol. 1-2 . The polyphonic period ; pt. 1-2). -- Includes index ; Pt. 1. 330-1400 -- pt. 2. 1400-c. 1600. -- (BA68992107) ; https://ci.nii.ac.jp/ncid/BA68992107 Author Heading(s): Wooldridge, H. Ellis (Harry Ellis) ; Buck, Percy Carter, Sir. -- Classification(s): LCC : ML160. -- Subject Heading(s): LCSH : Music -- History and criticism -- Medieval