TY  - BOOK
AU  - Hays,Ron D.
AU  - Ellickson,Phyllis L.
ED  - Conrad N. Hilton Foundation.
TI  - Longitudinal scalogram analysis: a methodology and microcomputer program for Guttman scale analysis of longitudinal data 
T2  - A Rand note
CY  - California
PB  - Rand Corporation, 1990.
KW  - Longitudinal method
KW  - Scaling (Social sciences)
N1  - Includes bibliographical references (p.4-5)
ER  -