Doctrine
Second Exodus - Catholic Doctrine
In Catholic teaching, a truth whose acceptance is necessary for the faithful, whether or not infallibly taught.
www.secondexodus.com/html/catholicdefinitions/doctrine.htm
The Development of Doctrine
This web site is about helping people know more about the Catholic Church. For non-believers, this site makes a strong case for theism, and Christianity in general. It shows that God is transcendent and immanent and revealed Himself in Jesus Christ. We are always looking for good writings in defense of theism, especially Christian theism and those articles shall be included in our Philosophy or Apologetics sections. The bringyou.to domain is ranked high at Google/Yahoo (thanks be to God), so your articles will get good exposure
www.bringyou.to/apologetics/a77.htm
The Development of Doctrine (Wikipedia)
en.wikipedia.org/wiki/Development_of_doctrine