1. A Modal Sortal Logic

   • Max A. Freund

   OriginalPaper Pages: 237 - 260

2. First- and Second-Order Logic of Mass Terms

   • Peter Roeper

   OriginalPaper Pages: 261 - 297

3. Socratic Proofs

   • Andrzej Wiśniewski

   OriginalPaper Pages: 299 - 326

4. “Four-Valued” Semantics for the Relevant Logic R

   • Edwin D. Mares

   OriginalPaper Pages: 327 - 341