TY  - BOOK
AU  - Stanford,Gene
TI  - Developing effective classroom groups: a practical guide for teachers 
AV  - LB1032 .D484 1980
PY  - 1980///
CY  - New York
PB  - A and W Visual Library
N1  - "A Hart Book". First published by Hart Publishing Company, Incorporated, New York, 1977; Bibliography: pages 284-287; 2
ER  -