ISBN 9781138987500 books & textbook
Armenian Neume System of Notation: Study and Analysis (Caucasus World)
Nersessian, Vrej N At'ayan, R. A. Nersessian, Vrej N.
Routledge /2015-12-31 Paperback / 290 Pages
isbn-10: 1138987506 / isbn-13: 9781138987500