Abstract
No abstract.
| Original language | English |
|---|---|
| Pages (from-to) | 219-220 |
| Number of pages | 2 |
| Journal | IPO Annual Progress Report |
| Volume | 5 |
| Publication status | Published - 1970 |
New relief paper for the blind
F.L. Engel, M.A. Ban, van den
Research output: Contribution to journal › Article › Academic › peer-review