Smith - Contract Theory - New paperback or softback - X555z

Preston - Development Theory - New paperback or softback - X555z

Payne - Reading Theory - New paperback or softback - X555z

Baldwin - Classification Theory - New paperback or softback - X555z

Kempson - Semantic Theory - New paperback or softback - X555z

Hurley - Beyond Consequentialism - New paperback or softback - 76 - X555z

Northcott - Ideal Theory - New paperback or softback - X555z

Swallow - Exploratory Galois Theory - New paperback or softback - 40 - X555z