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- [1] DESIGN OF SAMPLE SURVEYS - RAJ,D JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES A-STATISTICS IN SOCIETY, 1974, 137 : 627 - 627
- [9] SAMPLE DESIGN CONSIDERATIONS FOR INDOOR AIR EXPOSURE SURVEYS JAPCA-THE INTERNATIONAL JOURNAL OF AIR POLLUTION CONTROL AND HAZARDOUS WASTE MANAGEMENT, 1988, 38 (10): : 1266 - 1270