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- [1] USEFULNESS OF FACTOR AND CLUSTER ANALYSIS IN GROUPING CENSUS TRACTS HEALTH SERVICES REPORT, 1972, 87 (02): : 154 - 163
- [6] Use of Census Tracts in the Analysis of City Health Problems AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH, 1947, 37 (05): : 538 - 542