.csv is the generic "comma separated value"; these stylesheets actually use tab as a delimiter.
from OAI 2.0 oai_dc:
http://www.cs.cornell.edu/naomi/DC2003/OAI2.0_oai_dcToCSV.xsl
from OAI 2.0 nsdl_dc:
http://www.cs.cornell.edu/naomi/DC2003/OAI2.0_nsdl_dcToCSV.xsl
included stylesheet:
http://www.cs.cornell.edu/naomi/DC2003/elementsAndAttributes.xsl
For more information on how to use .csv files, please refer to our paper from DC2003.