Other products include ORGANIZATION@1 , aimed at children ages six to twelve , and the Britannica Discovery Library , written for children aged three to six -LRB- issued NUMBER@1 to NUMBER@2 -RRB- .

Other books are My First Britannica , written for children who are six to twelve years old , and the Britannica Discovery Library , written for children who are three to six years old -LRB- issued in NUMBER@1 to NUMBER@2 -RRB- .
