| Type |  Book |
| ชื่อเรื่อง | National geographic eyewitness to the 20th century / prepared by the Book Division |
| ISBN | 0792270258 (dlx.) |
| | 0792270495 |
| | 0792270495 (reg) |
| | 0792270495 : bt.1,495 |
| พิมพลักษณ์ | Washington, D.C. : The Society, c1999 |
| | Washington, D.C. : National geographic society, c1998 |
| รูปเล่ม | 400 p. : ill. (some col.) ; 29 cm |
| หัวเรื่อง | History, Modern --20th century [] |
| | History, Modern --20th century --Chronology [] |
| | History, Modern --20th century --Chronology [] |
| | Twentieth century |
| | Nationla geographic |