TY  - RPRT
TI  - Chronic frontal sinusitis treated by autogenous osteoplasty.
AU  - B Grahne
PY  - 1971
DO  - 10.3109/00016487109122475
UR  - https://pubmed.ncbi.nlm.nih.gov/4939713/
ID  - 4939713
ER  -