Shame. Mormon Doctrine is one of the best books for witnessing to the LDS.
But, as is typical, they have to distance themselves from anything that might tell the truth about what they believe.
When I was LDS, EVERY MORMON FAMILY had at least one copy and it was allowed on missions. It was the standard reference.
(I would have LOVED to have been a fly on the wall at the 'meeting' that the decision to quit making it so easily available in print was formulated.
Haven't these folks heard of the INTERNET yet?)
The LDS bus has a lot of apostles and “prophets’ under it...