TY  - BOOK
AU  - Heckman,James J.
AU  - Singer,Burton
TI  - Longitudinal analysis of labor market data
SN  - 0521304539 :
U1  - 331.1120151 
PY  - 1985///
CY  - Cambridge
PB  - The University Press
KW  - Labor suplly
KW  - Labor supply
KW  - Statistical methods
KW  - Labor economics
KW  - Labor market
N1  - Includes index
ER  -