TY  - RPRT
TI  - The qualitative-quantitative dualism.
AU  - E J Porter
PY  - 1989
DO  - 10.1111/j.1547-5069.1989.tb00107.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2659498/
ID  - 2659498
ER  -