Volúmen I https://www.dropbox.com/s/lv8mxadglajohg9/Enric%20Herrera%20-%20Teoria%20Musical%20y%20Armoni_a%20Moderna%20Vol%20I.pdf
Volúmen II https://www.dropbox.com/s/cxmyszofzdtkz56/Enric%20Herrera%20-%20Teoria%20Musical%20y%20Armoni_a%20Moderna%20Vol%20II.pdf