Acknowledgements:

I would like to thank the following students, whose enthusiasm and chemical expertise so important in searching the net, as well as creativity in preparing the listening comprehension exercises have made the project so special:

Anna Latos
Agnieszka Malejka
Monika Małeta
Edyta Micek
Wioleta Moskwa
Łucja Rodzik
Anna Rozpędzik
Paulina Sańko
Natalia Szydłowska
Joanna Tarasiewicz
Monika Tomecka
Mateusz Trochowski
Agata Turek
Joanna Waś
Bartosz Wiecha
Anna Wieczorek
Anna Wójcik

I would also like to show my appreciation to Monika Sobejko and Marta Sieńko for their valuable remarks on the first draft of the documents, which led to improvements in the final version.

Dorota Klimek