TY  - BOOK
AU  - Johnstone,Peter T.
TI  - Sketches of an Elephant: a topos theory compendium
T2  - Oxford logic guides 
SN  - 019852496X (Obra Completa)
PY  - 2002///
CY  - [S.l.]
PB  -  Oxford University Press
KW  - TEORÍA DE TOPOS
ER  -