Free on Kindle: A Plan for Securing Observation of the Variable Star
Announcement: New Forums
We are excited to announce the launch of our new forums! You can access it forums.aavso.org. For questions, please see our blog post. The forums at aavso.org/forum have become read-only.
This has been available for some time now, and in several formats, at http://www.gutenberg.org/ebooks/35613
Thanks for the link