TY  - RPRT
TI  - An inexpensive chart-reading instrument.
AU  - P J Lowe
AU  - C D Angenent
PY  - 1973
DO  - 10.1007/bf02483701
UR  - https://pubmed.ncbi.nlm.nih.gov/4729095/
ID  - 4729095
ER  -