Please see my review of the 2011 Volume 2 (C-F). Generally,I recommend buying volumes 2 years older than the
ones just being published (the price differential is so large)-but in the case of a few countries-noteably the Peoples Republic
of China (PRC)-this is not always a good practice,because the price changes between 2011 and 2012 were so great (doubling)
for some stamp years. I became aware of this from my dealer's prices. If you have an older publication,but are not
sure whether you want to invest in the most recent one,I suggest you go to your library-which likely will have an
more up to date version,and compare prices between the two versions. If you notice a significant difference,you
may want to purchase the most recent version of the catalog (our use your library's). A quick glance at the editors summary page
in the front of the volume indicates what the most significant changes were.