Concise term for non-ASCII Unicode characters

[Sean Leonard]

Related question as I am researching this:

How can I acquire (cheaply or free) the latest and most official copy of 
US-ASCII, namely, the version that Unicode references?

The Unicode Standard 8.0 refers to the following document:

ANSI X3.4: American National Standards Institute. Coded character 
set—7-bit American
national standard code for information interchange. New York: 1986. 
(ANSI X3.4-1986).

(See page 294.)

A quick Google search did not yield results. There are public/university 
library hard copies but they are hundreds of miles away from my location.

Sean