Professor Puffendorf's secret potions.
Cadwallader, Jane.
Paul, Korky.
Tzannes, Robin.
Oxford : Oxford University Press,
1996.
[Story book], edition for learners of English / Korky Paul and Robin Tzannes ; activities and adapted text by Jane Cadwaller -- Guide per l'insegnante / Jane Cadwaller, Korky Paul e Robin Tzannes.
English language