1
by Fenstad, Jens Erik
Published 1978
North-Holland Pub. Co.
...Studies in logic and the foundations of mathematics...

2
by Gandy, R. O.
Published 1977
North-Holland Pub. Co.
...Studies in logic and the foundations of mathematics...

3
by Gandy, R. O.
Published 1971
North-Holland Pub. Co.
...Studies in logic and the foundations of mathematics...