This is the rune set used by the Xenonite aliens in the History of a Galaxy book series. This font allows a user to create text in the language Xenonite Standard. Letters not in the Xenonite alphabet are duplicated from similar sounding letters. The letter is keyed by its initial - for example "X" creates the "Xa" rune - with the exception of "H" which will create "Tho" (to differentiate from "T" which creates "To").
Note that the rune "Pe" ("P") is only found in the Thoronite dialect.