Tue, 27 Jul 1999 18:58:40 +0200 paulson fixed the comments...
Tue, 27 Jul 1999 18:52:48 +0200 paulson a new theory containing just an axiom needed to derive imp_cong
Tue, 27 Jul 1999 18:52:23 +0200 paulson renamed theory LK to LK0
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