TY  - RPRT
TI  - The aqueduct echo method applied to brain stem tumours.
AU  - K Krogness
PY  - 1977
DO  - 10.1016/0041-624x(77)90032-4
UR  - https://pubmed.ncbi.nlm.nih.gov/871041/
ID  - 871041
ER  -