The most efficient way is to use the index page found at the back of the book.
The superlative of efficient is "most efficient."
computers, calculators, teachers, parents, relatives, and any electronic devises.
Spur Gear is the most efficient
More efficient and most efficient are the comparative and superlative forms of "efficient".
A screw is the most efficient.
ATP is the most efficient molecule
Heat is the most efficient agent of metamorphism.
most cost-efficient
Woodway Treadmills claim to be the most energy efficient.
There are many places your can find cost efficient Samsung accessories. cellularoutfitter.comm is a great place to find cell phone accessories. Brands mart USA is also a great warehouse to find stuff like that.
more efficient, most efficient
Write-back cache is the most efficient when performance is paramount.