TY  - RPRT
TI  - Effects of instructions on pulmonary function values.
AU  - D L Harm
AU  - R J Marion
AU  - T L Creer
AU  - H Kotses
PY  - 1985
DO  - 10.3109/02770908509087112
UR  - https://pubmed.ncbi.nlm.nih.gov/4077810/
ID  - 4077810
ER  -