On formally undecidable propositions of Principia Mathematica ...
Kurt Gödel & Martin Hirzel
Humanism and Terror: An Essay on the Communist Problem
Maurice Merleau-Ponty
The Geometry of Terrorism
Donald Black
Questioning Technology
Andrew Feenberg
Earthy Realism: The Meaning of Gaia
James Lovelock & Mary Midgley
Theory of the Earth
Thomas Nail