3 ms·
Might as well point out the availability of this: http://www.math.mcgill.ca/triples/Barr-Wells-ctcs.pdf http://www.math.mcgill.ca/triples/Barr-Wells-ctcs.pdf
by talideon 12y ago
Might as well point out the availability of this: http://www.math.mcgill.ca/triples/Barr-Wells-ctcs.pdf http://www.math.mcgill.ca/triples/Barr-Wells-ctcs.pdf