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1
by Goodstein, R. L.
Published 1957
North-Holland Pub. Co.
Subjects: ...Recursion theory / http://id.loc.gov/authorities/subjects/sh85112012...

2
by Goodstein, R. L.
Published 1961
North-Holland
Subjects: ...Recursion theory / http://id.loc.gov/authorities/subjects/sh85112012...