TY  - RPRT
TI  - [Periscopic device for relaxation of accommodation, adapted to the (Zeiss-Jena) coincidence refractometer].
AU  - P P Vancea
AU  - A Calin
AU  - D Gheghea
UR  - https://pubmed.ncbi.nlm.nih.gov/138906/
ID  - 138906
ER  -