no. 9
October 2013
pages: 5-16
Karina Michalska, Anna Pazera, Marcin Bizukojć, Wojeciech Wolf, Maciej Sibiński
Connecting renewable energy sources to the electro-power network
pages: 17-22
Marek Sikora
Lemnaceae biomass as an alternative substrate for renewable energy
pages: 23-31
Zdzisława Romanowska-Duda, Wiktor Pszczółkowski
pages: 32-40
Ewa Kochańska
pages: 41-47
Beata Gotwald
The internet as a tool for conducting social research
pages: 48-52
Monika Staniszewska