Preiļu Valsts ģimnāzija

18

* http://www.dzm.lu.lv/dbz/IT/D_11/default.aspx@tabid=3&id=460.html#navtop

http://www.leiput.lv/index.php?opti

on=com_content&view=article&id=

146&Itemid=613

http://www.youtube.com/watch?v=67Hs-91yXs4

http://www.geo.lu.lv/fileadmin/user_upload/lu_portal/projekti/

gzzf/videunilgtspejigaattistiba/VidZ1010/12.LEKCIJA-

Vides_veseliba.pdf