Crosstab R Code by Dr Paul Williamson
http://pcwww.liv.ac.uk/~william/R/crosstab.r
http://rstudio-pubs-static.s3.amazonaws.com/6975_c4943349b6174f448104a5513fed59a9.html
http://pcwww.liv.ac.uk/~william/R/crosstab.r
http://rstudio-pubs-static.s3.amazonaws.com/6975_c4943349b6174f448104a5513fed59a9.html
THANKS