Coxeter on music?

Has anybody seen this?

HSM Coxeter - Music and mathematics
The Canadian Music Journal, VI:13–24, 1962

It's cited in an Eric Demaine paper (which, by the way,
Kraig, also cites Brun).

I don't see anything on google or amazon. Perhaps one
of those things that can still only be obtained through
a library.

-Carl