Snider - Natural Problem of Consciousness - New paperback or softback - X555z

Devlin - Language of Mathematics - New paperback or softback - X555z

Devlin - Fred's Dilemma - New paperback or softback - X555z

Iesan - Saint-Venant's Problem - New paperback or softback - X555z

MacKenzie - Pergie's Problem - New paperback or softback - X555z

Sax - Problem with Ritual Efficacy - New paperback or softback - X555z

Devlin - Heavenly Harmonies - New paperback or softback - 72 - X555z

Kajitani - Hyperbolic Cauchy Problem - New paperback or softback - X555z