@article{1365334, note = {"September 1984, Volume 51, Number 309 (third of 4 numbers)."}, author = {Joyal, André, and Tierney, Myles,}, url = {http://library.usi.edu/record/1365334}, title = {An extension of the Galois theory of Grothendieck /}, recid = {1365334}, pages = {1 online resource (87 pages).}, }