TY  - RPRT
TI  - Multi-matrix sampling: a valuable data collection method for health educators.
AU  - R S Gold
AU  - C E Basch
AU  - R J McDermott
PY  - 1983
DO  - 10.1111/j.1746-1561.1983.tb01142.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6552343/
ID  - 6552343
ER  -