Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Irrational numbers. 3 Irrationalism (Philosophy) 4 SEE ALSO: Absurd (Philosophy) 3 Irrationalism (Philosophy) -- Fiction. 1 Irrationality (Philosophy) 1 Irrawaddy River (Burma) -- Description and travel. 1 Irregular migration -- SEE: Illegal immigration 561 Irregular warfare. 25 Irregular warfare -- Armed Forces -- United States. 1 Irregular warfare -- Case studies. 4 Irregular warfare -- Economic aspects. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >