Modern Fortresses - From the Ring Fortress to the Fortified Zone
With some illustrations/sketches
Please refer to the enclosed illustrations for the table of contents
additional information
| author | Ludwig |
| Year | 1938 |
| Publisher | mediator |
| cover | softcover |
| number of pages | 77 |
| Condition | slight signs of wear and age on the cover, inside: clean and with firm binding |