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2. Allen, D. I.Open area schools in British Columbia. Vancouver: Simon Fraser University, 1971.
3. American Association of School Administrators.Openspace schools. Washington, D. C.: AASA, 1971.
4. Anderson, D. C. Open-plan schools: Time for a peek at Lady Godiva.Education Canada, 1970,10(2), 3–6.
5. Board of Education, Cherry Creek Schools. A preliminary program evaluation report of larger self-contained classrooms and programs housed therein. Aurora, Col., 1970.