TY  - RPRT
TI  - Using administrative data for longitudinal research: comparisons with primary data collection.
AU  - L L Roos
AU  - J P Nicol
AU  - S M Cageorge
PY  - 1987
DO  - 10.1016/0021-9681(87)90095-6
UR  - https://pubmed.ncbi.nlm.nih.gov/3805233/
ID  - 3805233
ER  -