Corrections for the January 2014 issue
Corrections for the November/December 2013 issue
Corrections for the September/October 2013 issue
Corrections for the July/August 2013 issue
Corrections for the May/June 2013 issue
Corrections for this issue.
Corrections for the March/April 2013 issue
Corrections for this issue.
Corrections for this issue
Corrections for this issue.
Corrections for this issue.
Corrections for patterns in this issue.
Corrections and explanations