to tez jego sprawka :>
http://www.cme.uab.edu/onlineCourses...es/031703d.jpg
http://www.tidsskriftet.no/lts-img/2...g200217036.jpg
http://www.cvm.okstate.edu/instructi...es/img0048.jpg
http://lancaster.unl.edu/enviro/Imag...cluse_bite.JPG