Establishments primarily engaged in printing by the lithographic process. The greater part of the work in this industry is performed on a job or custom basis; but in some cases lithographed calendars, maps, posters, decalcomanias, or other products are made for sale. Offset printing, photo-offset printing, and photolithographing are also included in this industry. Establishments primarily engaged in lithographing books and pamphlets, without publishing, are classified in Industry 2732. Establishments primarily engaged in publishing or printing greeting cards are classified in Industry 2771. Establishments primarily engaged in preparing lithographic or offset plates and in related services are classified in Industry 2796. Establishments primarily engaged in providing photocopying services are classified in Services, Industry 7334.