General links
http://www.ons.gov.uk/ons/guide-method/index.html
http://www.statcan.gc.ca/start-debut-eng.html
http://www.cbs.nl/en-GB/menu/home/default.htm

On data editing
http://www.statcan.gc.ca/edu/power-pouvoir/ch3/editing-edition/5214781-eng.htm

On data entry
http://www.dataentrygermany.com/
http://www.epidata.dk/
http://www.ffiec.gov/cra/softinfo.htm

Free statistical software
http://www.freestatistics.info/stat.php
http://www.r-project.org/

Research Methods in Real Life 'VNS: a black day for research'
www.antitrustinstitute.org/~antitrust/node/10346
www.abcnews.com/Politics/story?id=122575
savannahnow.com/110900/LOCsurvey.shtmlwww.pollingreport.com/2000.htm