Deletion of Doctrine of Exchange

Comment: Per |verifiability requirements. Topic covered by international reliable, third-party sources  http://www.latimes.com/news/local/la-scientology062590,0,5980987.story  Los Angeles Times and http://www.timesonline.co.uk/tol/comment/faith/article1975104.ece Times Online (England
Stance: keep
Cited policy: Wikipedia:Verifiability (WP:V)