LC Subject headings

[Frederick Muller <fmuller@TELLURIAN.NET>]

One of my summer jobs this year at a college library is authority
control.  I found something interesting yesterday.  Did you know
that there are two subject headings (as per 1994 LC subject
headings)
   Disappeared persons
   Missing persons  (this is a narrower term)

Does anyone know the difference?

One I found a while ago was "Sewage and sewerage" (I always
though that one was a spelling mistake but..)
Sewerage is the system of pipes and
Sewage is what flows through through them.

Does anyone know if the LC subject heading listing is on the
internet somewhere?  Is the name subject heading list on line
also?  I don't use them enough to make it worthwhile to purchase
the sets.



***************
Frederick Muller
Halsted Middle School Library
59 Halsted Street
Newton, NJ   07860
   voice (973) 383-7440 ext 228
   FAX (973) 383-7432
My book reviews are compiled at:
  http://www.halsted.org/br.htm
My personal web site is:
  http://users.tellurian.net/fmuller

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