TY  - JOUR
T1  - The American National Election Studies: a progress report
AU  - Sapiro, Virginia
AU  - Bartels, Larry M.
PY  - 1998
SP  - 64
EP  - 68
JO  - PS, Political Science and Politics
VL  - 31
IS  - 1
SN  - 1049-0965
UR  - http://www.jstor.org/stable/420436
ER  -