vhf/free-programming-books — pull request #940 by AndriyLin (2014-04-29 23:25:30+00:00)
Title: add book "Programming in Martin-Löf's Type Theory" by Bengt Nordström

According to the website, this book was published by Oxford University Press in 1990. It is now out of print.

It has both Postscript version and pdf version.