The sample for the Sustaining Effects Study and projections of its characteristics to the national population - Hoepfner, Ralph; Zagorski, H. J. (Henry J.); Wellisch, Jean B.; United States. Office of Education (Santa Monica: System develop. corp, 1977)
Technicial report #1 from the study of the sustaining effects of compensatory education on basic skills
Keywords: Education, Elementary -- United States -- Evaluation; Education -- Research -- United States -- Methodology