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Z Gesamte Hyg
; 20(10): 687-90, 1974 Oct.
Article
in German
| MEDLINE
| ID: mdl-4467486
2.
Dtsch Gesundheitsw
; 24(25): 1178-81, 1969 Jun 19.
Article
in German
| MEDLINE
| ID: mdl-4913158