Introduction
Why Combine Logics?
Modality, Si! Modal Logic, No!
Inverses for Normal Modal Operators
Grafting Modalities onto Substructural Implication Systems*
Intuitionistic Autoepistemic Logic*
Combining Possibilities and Negations
Colin McLarty, Elementary Categories, Elementary Toposes, Cla- rendon Press, Oxford, 1995, $ 25, ISBN 0198514735 (paper).