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Does any map collection have indexes for old ('50s and '60s)
Nigerian topos at 1:2,400 and 1:4,800?  We're cataloging a lot of
these that have been in the backlog for a long time.  Does anyone
else have these maps, and what have you used for indexes?   Thanks
for any clues or help you can give!
 
Jane Carlson
Map Collection Assistant
University of Iowa
 
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