Estimating distance: with vision and listening exercises.
With many sketches
Please refer to the enclosed illustrations for the complete table of contents
additional information
| author | Seckendorff |
| Year | 1933 |
| output | |
| Publisher | Bernhard&Gräfe |
| cover | softcover |
| number of pages | 58 |
| Condition | slight signs of wear and age on the cover, inside: clean and with firm binding |
