TY  - RPRT
TI  - Variable venting valve for earmolds.
AU  - W A Cooper
AU  - J R Franks
AU  - R N McFall
AU  - D P Goldstein
DO  - 10.3109/00206097509071741
UR  - https://pubmed.ncbi.nlm.nih.gov/1131129/
ID  - 1131129
ER  -