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- [5] IS LOW-LEVEL LEAD POLLUTION DANGEROUS [J]. BRITISH MEDICAL JOURNAL, 1980, 281 (6255): : 1622 - 1625
- [6] IS LOW-LEVEL LEAD POLLUTION DANGEROUS [J]. BRITISH MEDICAL JOURNAL, 1981, 282 (6258): : 147 - 147
- [7] LOW-LEVEL RADIATION - HOW MUCH IS TOO MUCH [J]. INDUSTRIAL RESEARCH & DEVELOPMENT, 1979, 21 (05): : 90 - +