Velikost videa: 1280 X 720853 X 480640 X 360
Zobrazit ovladače přehrávání
Automatické přehrávání
Přehrát
thank you
Are these old videos reposted?
Yes
These lectures have been very helpful. Thanku for continuing to educate. Just discovered the lecture app.. learning so much!
thank you
Are these old videos reposted?
Yes
These lectures have been very helpful. Thanku for continuing to educate. Just discovered the lecture app.. learning so much!