https://www.scienceblogs.com/gregladen/2012/11/01/does-the-drake-equation-require-downsizing
Does the Drake Equation require smaller coefficients? | ScienceBlogs
The Drake Equation is that famous equation where you count how many stars there are, figure out the chance of a star having planets, of planets having water,...
the drake equationrequiresmallercoefficients
https://www.rosecityreader.com/2016/10/book-beginning-drake-equation-by-bart.html
Rose City Reader: Book Beginning: The Drake Equation by Bart King
Books, book lists, and bookish thoughts from Rose City Reader.
the drake equationrose cityreaderbookbeginning