Paul, Korky. <br/><br/>
Professor Puffendorf's secret potions / 
Korky Paul and Robin Tzannes ; activities and adapted text by Jane Cadwallader. 
 - Oxford :  Oxford University Press,  2002. 
 - 35 p., :  ill. (some col.) ;  28 cm.+  1 cassette 
<br/><br/> "Edition for learners of English." 
<br/><br/><label>ISBN: </label>019431913X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for foreign speakers.<br/>Readers (Elementary)