'Book of the Law' in the Bible

as Moses the servant of the LORD commanded the children of Israel, according as it is written in the book of the law of Moses: an altar of rough stone over which no tool of iron was lifted. And they sacrificed thereon burnt sacrifice, and offered peace offerings.

And after that he read all the words of the law, both the blessing and cursing, according to all that is written in the book of the law -

Be, therefore, exceeding strong that ye take heed to do all that is written in the book of the law of Moses, that ye bow not aside therefrom, to the righthand or to the left:

And Joshua wrote these words in the book of the law of God, and took a great stone and pitched it on end in the said place, even under an oak that stood in the sanctuary of the LORD.