Nansi a Nel a'r diwrnod glawog /
Schwartz, Roslyn,1951-
Elan, Catrin.
University of Wales, Aberystwyth.Centre for Educational Studies.
Aberystwyth : Canolfan Astudiaethau Addysg,
c2011.
Cyhoeddwyd yn wreiddiol = Originally published: Toronto, Ont. : Annick Press, 1999.
Mole Sisters (Fictitious characters)
Moles (Animals)
Rain and rainfall