(N|PIDEMIOLOGIQ I PROFILAKTIKA GRIPPA W SOCIALISTI^ESKIH STRANAH (B:s (NmATERIALY (B1 (NSOWE]ANIQ \KSPERTOW SOCIALISTI^ESKIH STRAN PO GRIPPU (B((NMART (B1973 (NG(B.) /s - (NzYKOW(B, (Nm(B.(Np(B.s; (NwSESO@ZNYJ NAU^NO(B- (NISSLEDOWATELXSKIJ INSTITUT GRIPPAs; (NsOWE]ANIE \KSPERTOW SOCIALISTI^ESKIH STRAN PO GRIPPUs 1973 ; (NlENINGRAD(B)s ((NlENINGRAD (B:s [(Nb(B. (NI(B.],s, 1975)
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Keywords: (N|PIDEMIOLOGIQs; (NgRIPPs