TY  - RPRT
TI  - Knowledge, leaders and progress, 1968.
AU  - R M Schlotfeldt
PY  - 1997
DO  - 10.1111/j.1547-5069.1997.tb01541.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9212506/
ID  - 9212506
ER  -