Mae Smot yn gallu rhifo /
Hill, Eric,1927-
Lewis, Siân,1945-
Llandysul : Gwasg Gomer,
1999.
Addasiad Cymraeg gan = Welsh adaptation by : Siân Lewis.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Ventura Publishing, 1999.
Counting
Welsh language