TY  - RPRT
TI  - An automated Townsend null system.
AU  - D L Haskard
PY  - 1971
DO  - 10.1111/j.1440-1673.1971.tb01281.x
UR  - https://pubmed.ncbi.nlm.nih.gov/5139188/
ID  - 5139188
ER  -