This U.S. industry comprises establishments primarily engaged in retailing specialized lines of merchandise (except motor vehicle and parts dealers; furniture and home furnishings stores; electronic and appliance stores; building material and garden equipment and supplies dealers; food and beverage stores; health and personal care stores; gasoline stations; clothing and clothing accessories stores; sporting goods, hobby, book and music stores; general merchandise stores; florists; office supplies, stationery and gift stores; used merchandise stores; pet and pet supplies stores; art dealers; manufactured home (i.e., mobile homes) dealers; and tobacco stores). This industry also includes establishments primarily engaged in retailing a general line of new and used merchandise on an auction basis. Retailing specialized lines of merchandise via electronic home shopping, mail-order, or direct sale--are classified in Subsector 454, Nonstore Retailers; Retailing merchandise via electronic auctions--are classified in Industry 454112, Electronic Auctions; Auctioning (i.e., on the location of others as independent auctioneers)--are classified in Industry 561990, All Other Support Services; Retailing pets and pet supplies--are classified in Industry 453910, Pet and Pet Supplies Stores; Retailing original and limited edition art works--are classified in Industry 453920, Art Dealers; Retailing manufactured homes (i.e., mobile homes)--are classified in Industry 453930, Manufactured (Mobile) Home Dealers; Retailing cigarettes, cigars, tobacco, pipes, and other smokers' supplies--are classified in U.S. Industry 453991, Tobacco Stores; Retailing antiques--are classified in Industry 453310, Used Merchandise Stores; Retailing new books--are classified in Industry 451211, Book Stores; Retailing new jewelry (except costume jewelry)--are classified in Industry 448310, Jewelry Stores; and Retailing new costume jewelry--are classified in Industry 448150, Clothing Accessories Stores.