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Sheaves in Geometry and Logic
by Saunders MacLane, Ieke Moerdijk
Sets, Models and Proofs
by Ieke Moerdijk, Jaap van Oosten
Algebraic Set Theory
by Andri Joyal, Izak Moerdijk, Ieke Moerdijk, J. W. S. Cassels (Contribution by), N. J. Hitchin (Contribution by)