Ridley M R 1890 Keats’ craftsmanship : a study in poetic development / by M.R. Ridley. - Lincoln: University of Nebraska Press, 1965. - viii, [4], 314 p. facsim. 21 cm. - A Bison book, BB169 . Bibliography: p. [x] Subjects--Personal Names: Keats John 17951821 --Technique LC Class. No.: PR4837 Dewey Class. No.: 821.7