00599nam a22001937a 4500 OSt 20260701123801.0 260701b |||||||| |||| 00| 0 eng d Chuka University Library LB 1731 .P69 2004 Easton Brown Lois (Editor) 32356 Powerful Designs for Professional Learning Various Pagings Illustrated Professional Learning Communities 32193 Staff Development 32357 Teachers Effectiveness 32358 Educational Leadership 11614 lcc BK 0 25785 25785