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- [6] INTERLABORATORY TEST FOR EXTERNAL QUALITY-CONTROL .1. SIGNIFICANCE OF THE EXTERNAL QUALITY-CONTROL STAUB REINHALTUNG DER LUFT, 1993, 53 (05): : 177 - 182
- [8] INTERNAL VERSUS EXTERNAL QUALITY-CONTROL - THE VALUE OF EXTERNAL EXAMINATION IN MEDICAL-EDUCATION JOURNAL OF MEDICAL EDUCATION, 1983, 58 (04): : 358 - 359
- [9] QUALITY-CONTROL IN SCHISTOSOMIASIS PROGRAMS TROPICAL MEDICINE AND PARASITOLOGY, 1989, 40 (02): : 214 - 219
- [10] CONTRACTORS QUALITY-CONTROL PROGRAMS JOURNAL OF PROFESSIONAL ISSUES IN ENGINEERING-ASCE, 1984, 110 (03): : 123 - 126