TY - BOOK AU - Gibbs Jeans TI - Tribes learning communities SN - 978-0-932762-41-2 AV - LB 1032 .G5 2006 PY - 2006/// CY - Windsor ,California PB - Center source systems KW - Group work in education KW - Classroom environment-United states KW - Academic achievement-United states KW - Social learning ER -