Subject heading
Perpetual calendars
2 books carry this heading. It is a source-library term, kept as recorded; related traditions and headings below are drawn from co-occurrence, not editorial judgment.
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Calendarium perpetuum universale, das ist, Immerwährender allgemeiner Calender
Stanislaus Reinhard Acxtelmeier, Stanislaus Reinhard author Acxtelmeier, Johann Leonhard Buggel, Moritz Hagen, Johan Conradt Reiff
1707German
Der Hundertjährige Calender, auf das gegenwärtige Jahr-Hundert nach Christi Geburt, von 1800 bis 1900
1800German