where can I get standards documents

[Gordon Cross]

OK, I am going to give up and come to the net for an answer to this question.
My ragged copy of a copy of a copy of (well you get the idea) the proposed
ANSI standard is dated Feb 1986 and I am sure quite out of date.  Where can
I buy the latest and greatest version??  Also I would like to get the IEEE
floating point standard as well...
-- 

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