21. | | | |
22. | | | |
23. | | Autor: Weintraub, Linda | |
24. | | Autor: Spaid, Sue | |
25. | | Autor: Boisrobert, Anouck, 1985-- Rigaud, Louis, 1985-- | |
26. | | Autor: Georgescu-Roegen, Nicholas | |
27. | | Autor: Russel, James | |
28. | | Autor: Cosme, João | |
29. | | Autor: Goodall, Christopher Frank William, 1955 | |
30. | | Autor: Noblet, Jean-François | |