--subdivision Control under individual weeds and groups of weeds, e.g. Prickly pears--Control; Aquatic weeds--Control; and subdivision Weed control under individual crops and groups of crops, e.g. Corn--Weed control
Here are entered works on special weeks sponsored by individuals, organizations, or governmental bodies interested in publicizing or promoting patriotic, charitable, commercial or other events and observances. --subdivision Anniversaries, etc. under names of countries, cities, etc., names of individual persons and corporate bodies, and under historic and social movements, historic events, classes of persons, and ethnic groups; and subdivision Centennial celebrations, etc. under names of countries, cities, etc., and individual corporate bodies, and under historic events
Here are entered works on the hours that employees are at work. Works on the number of hours of labor necessary to accomplish a task are entered under Labor time. Works on the units produced by workers in relation to a given effort or unit of time expended are entered under Labor productivity.
