Rhifyddeg pen.
Adams, J. W.,(John William),1912-
Beaumont, R. P.(Richard Peter)
Goddard, T. R.,(Thomas Rowland),1900-
Huddersfield : Schofield & Sims,
1998.
Arg. Saesneg gwreiddiol = Original English ed.: Huddersfield: Schofield & Sims Ltd, 1976.
Teitl clawr = Cover title.
Mathematics
Arithmetic
Mathematics