TY  - BOOK
AU  - Langbein Laura Irwin
AU  -  Lichtman Allan J
TI  - Ecological inference
T2  - Quantitative Applications in the Social Sciences. 10
SN  - 00803904101
U1  - B280bE, L8 
PY  - 1978///
CY  - Beverly
PB  - Hills Sage         
KW  - Statistics
N1  - Bibliography : 66-70
ER  -