Effco Limited is the software consultancy or supply business based in Dumfries
efficiency rating
EFF 1 is an abreviated name to classify a specific type of engine believed to be more energy efficient!
There are at least three lines of Eff's in the US. The oldest is German, and came to Pennsylvania in colonial times. The next is Ashkenazi, and came around 1900. The last is Danish, and came after...