TY  - BOOK
AU  - Bickel,Robert
TI  - Multilevel analysis for applied research: It's just regression 
SN  - 9788122422047
U1  - 001.42 22
PY  - 2008///
CY  - New york
PB  - The guilford press
KW  - Research methods
N1  - Includes indexes
ER  -