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Kenneth E. Boulding, The Concept of Need for Health Services, The Milbank Memorial Fund Quarterly, Vol. 44, No. 4, Part 2: Health Services Research II. A Series of Papers Commissioned by the Health Services Research Study Section of the United States Public Health Service. Discussed at a Conference Held in New York City, May 6-7, 1966 (Oct., 1966), pp. 202-223
Kenneth E. Boulding (Sat,) studied this question.