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Br Med J (Clin Res Ed)
; 292(6535): 1560, 1986 Jun 14.
Article
in English
| MEDLINE
| ID: mdl-3087516
2.
Health Phys
; 29(5): 655-61, 1975 Nov.
Article
in English
| MEDLINE
| ID: mdl-1193876