Listening to music [by] Richard L. Crocker [and] Ann P. BasartRichard L. Crocker · First published 1971Open the Tome
Studies in medieval music theory and the early sequenceRichard L. Crocker · First published 1997Open the Tome
The early middle ages to 1300Richard L. Crocker, David Hiley · First published 1900 · Latest edition 1994Open the Tome
Instructor's manual to accompany Listening to musicRichard L. Crocker · First published 1971Open the Tome
The repertoire of proses at Saint Martial de LimogesRichard L. Crocker · First published 1957Open the Tome
Introduction to the Gregorian melodiesWagner, Peter, Peter Wagner, Richard L. Crocker · First published 1901Open the Tome