Here are entered works on the area of the northwestern United States between the Cascade Range and Rocky Mountains, comprising eastern Washington, northeastern Oregon, northern Idaho, and extreme western Montana
Here are entered works dealing with the Middle East alone, or the Middle East, North Africa and Islamic Spain as a whole, during the period 622-1517, i.e., from the rise and expansion of Islam to the creation of the Ottoman Empire
Here are entered works on the social conditions of mothers apart from their workplace and on how work affects the quality of life of mothers. Works on working mothers of specific ethnic groups are assigned an additional subject heading of the type Afro-American women--Employment; Women, Black--Employment; etc. Works on the conditions of employment of mothers are entered under Mothers--Employment
--subdivision Rating of under classes of persons and subdivision Officials and employees--Rating of under names of countries, cities, etc., and under individual government departments, agencies, etc