TY  - JOUR
PY  - 1991//
TI  - Effect of 1St-Grade Classroom Environment on Shy Behavior, Aggressive-Behavior, and Concentration Problems
JO  - American journal of community psychology
A1  - Werthamerlarsson, L
A1  - Kellam, Sheppard
A1  - Wheeler, L
SP  - 585
EP  - 602
VL  - 19
IS  - 4
N2  - <p>[Abstract unavailable]</p>
LA  - 
SN  - 0091-0562
UR  - http://dx.doi.org/
ID  - ref1
ER  -