Ministry of Labor Contains a fair amount of wonkish policy stuff, and has a fair amount of English information, which may be of use when tracking down translation equivalents. National Diet Library Uses cumbersome images that will slow your download, but on the plus side, actually has useful information for library users, info about electronic libraries, and non-laughable English equivalents for everything. The Prime Minister's official residence Text of speeches and other government administrivia. Links to other Japanese government web sites that I haven't gotten around to including here yet. Book Publishers An index of Japanese publishers Gives links to a list of publishers in Japan.
Same site contains lists of publishers in other countries .
Online ordering available from this site. Japanese offerings are much more extensive than English offerings.