(Q68217172)
Statements
Influenza--United States, 1989-90 and 1990-91 seasons (English)
N J Cox
L. E. Chapman
M. A. Tipple
L. M. Schmeltz
S. E. Good
H. L. Regnery
A. P. Kendal
H. E. Gary
1 May 1992
scientific article published on May 29, 1992