TY  - BOOK
AU  - Menard,Scott
TI  - Longitudinal research
SN  - 0803937539
PY  - 1991///
CY  - Newbury Park
PB  - SAGE Publications
KW  - Social sciences
KW  - Research
KW  - Longitudinal studies
N1  - Includes bibliographical references and index
ER  -