These are the first fifty P articles in the Columbia Encyclopedia. I'm trying to get a rough idea of how our coverage compares to theirs. See this post to the mailing list for the reason why I'm curious about this. [Far later edit: that mailing list post seems to have nothing to do with this. Whether the posts have been reindexed, or I linked to the wrong thing, or that message really does relate to this for some reason I can't remember, I do not know.]