TY  - GEN
AU  - 
AU  - GLENN, Norval D.
TI  - Cohort Analysis
U1  - 001.42/GLE 
PY  - 1977///
CY  - BEVERLY HILLS
PB  - Sage
N1  - ANALYSIS AND INTERPRETATION; COHORT ANALYSIS; COMPARABILITY AND SAMPLING
ER  -