Oops -- I meant R version 2.5.1, not 1.5.1. My apologies. -- Russell V. Lenth, Professor Department of Statistics & Actuarial Science (319)335-0814 FAX (319)335-3017 The University of Iowa [EMAIL PROTECTED] Iowa City, IA 52242 USA http://www.stat.uiowa.edu/~rlenth/
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