Exterior The Hilton Crystal City Hotel at Ronald Reagan Washington National Airport is located within walking distance to the metro, shopping, restaurants, and businesses, and within minutes of downtown Washington D.C.
A bookcase, or bookshelf, is a piece of furniture, almost always with horizontal shelves, used to store books. Bookcases are used in private homes, public and university libraries, offices and bookstores.
Bookshelf Shelf Spacing and Depth of Shelves. Each shelf in a bookshelf is set at a particular height depending on what type of book the shelving holds. For magazines, shelves are set 11 inches apart. For books, the shelves are spaced 10 inches apart.