TY  - RPRT
TI  - Helmets on climbers.
AU  - T Frost
AU  - A Embick
AU  - J Fries
AU  - H N Hultgren
PY  - 1995
DO  - 10.1580/1080-6032(1995)006[0344:hoc]2.3.co;2
UR  - https://pubmed.ncbi.nlm.nih.gov/11990098/
ID  - 11990098
ER  -