1) Carnera et al 2) Leading singers of groups 3) Piano duet parts
Found on
https://www.crosswordclues.com/clue/primos
PRIMOS was an operating system developed during the 1970s by Prime Computer for its minicomputer systems. It rapidly gained popularity and by the mid-1980s was a serious contender as a mainline minicomputer operating system. With the advent of PCs and the decline of the minicomputer industry Prime was forced out of the market in the early 1990s. P...
Found on
http://en.wikipedia.org/wiki/PRIMOS
No exact match found.
