DOC: cookbook updates

     updates in indexing.rst for view vs copy

Author: jreback

doc/source/cookbook.rst

@@ -273,6 +273,11 @@ The :ref:`HDFStores <io.hdf5>` docs
 `Merging on-disk tables with millions of rows
 <http://stackoverflow.com/questions/14614512/merging-two-tables-with-millions-of-rows-in-python/14617925#14617925>`__
 
+Deduplicating a large store by chunks, essentially a recusive reduction operation. Shows function for taking in data from 
+csv file and creating a store by chunks, with date parsing as well.
+`See here
+<http://stackoverflow.com/questions/16110252/need-to-compare-very-large-files-around-1-5gb-in-python/16110391#16110391>`__
+
 `Large Data work flows
 <http://stackoverflow.com/questions/14262433/large-data-work-flows-using-pandas>`__