Embedded Files
Roots a la Knott.pdfOriginal article by Cargill G. Knott:
The Abacus, in its Historic and Scientific Aspects in archive.org.
As a separate PDF with TOC.
Page updated
Google Sites
Report abuse
Roots a la Knott.pdfOriginal article by Cargill G. Knott:
The Abacus, in its Historic and Scientific Aspects in archive.org.
As a separate PDF with TOC.