. . . . . "Picture books" . . "Digger" . "Juvenile works" . . . . . . "Specimens" . . . . . . . "Picture books for children" . . . "Simple text and illustrations introduce young readers to the workings of diggers, backhoes, an excavator and a mini loader." . . . "Pictorial works" . . "Toy and movable books Specimens." . . . . "Toy and movable books." . . "Machinery." . . "Machinery Juvenile literature." . . "Excavating machinery." . . "Excavating machinery Juvenile literature." . . "Board books." . .