TY  - BOOK
AU  - Heck, Ronald H
AU  - Thomas, Scott Loring
TI  - An introduction to multilevel modeling techniques
SN  - 9780805829631
SN  - 99019115
U1  - 300.15118 HEC 
PY  - 1999///
CY  - Mahwah, NJ
PB  - Lawrence Erlbaum Associates
KW  - Social sciences - Mathematical models
KW  - Social sciences - Research - Mathematical models
N1  - Includes bibliographical references (p. 193-199) and indexes
ER  -