On This Day: 13 February 1971 12,000 South Vietnamese troops cross into ---------- ?

Questions

Early in his career, which rolling stones guitarist played with rod stewart and 'the faces'?

Earth's outer layer of surface soil or crust is called the _____________.?

what are cocci, spirilla and streptococci?

Eddie and his father's last name in "The Courtship of Eddie's Father"?

Edgar allan poe introduced mystery fiction's first fictional detective, auguste c. dupin, in what 1841 story?