TY  - RPRT
TI  - NOTE ON DIFFICULTIES IN P TYPING.
AU  - J MOHR
PY  - 1963
DO  - 10.1111/j.1469-1809.1963.tb00783.x
UR  - https://pubmed.ncbi.nlm.nih.gov/14059289/
ID  - 14059289
ER  -