раскрутка и продвижение сайтов about 29 days ago

Bestellen Sie SEO-Suchmaschinenoptimierung der Website, Bestellen Sie Website-Promotion-Services Bei allen Fragen wenden Sie sich an den Benutzernamen Skype pokras7777 Wir sammeln auch Basen

suscription problem about 3 months ago

suscription button is not avilable ....how can i suscribe to this site to watch all video....

Physic about 8 months ago

A man in a train moving with a constant velocity drops a ball on the plateform .The path of the ball as seen by an observer standing at the plateform is  (a) St.line      (b) Circle      (c) Parabola     (d) Hyperbola