indicates the type of material where book is located
A star on a map is usually called a "map symbol" or specifically a "star symbol." This symbol often represents a significant location, such as a city, landmark, or point of interest. In some cases, it may indicate the location of a specific event or feature that is noteworthy for navigation or reference.
most map I have seen had the book symbol
An undefined symbol is where you make a reference to a symbol, but you have not yet declared and defined it.
The symbol for the reference point is usually denoted as "O" in geometry and physics. It is used as a fixed point from which position, distance, and direction are measured.
The symbol for Dollar General Corporation in the NYSE is: DG.
The symbol for General Cable Corporation in the NYSE is: BGC.
The symbol for General Dynamics Corporation in the NYSE is: GD.
The symbol for General Electric Company in the NYSE is: GE.
The symbol for General Motors Company in the NYSE is: GM.
The symbol for Mercury General Corporation in the NYSE is: MCY.
The symbol for Cathay General Bancorp in NASDAQ is: CATY.
The symbol for General Finance Corporation in NASDAQ is: GFN.