P F Wehrle
发表
W J Peeples,
L Corsa,
M S Hilbert,
1968,
American journal of public health and the nation's health.
P F Wehrle,
W. Wayne,
R. Carroll,
1967,
JAMA.
P F Wehrle,
D A Henderson,
D. Henderson,
1970,
Bulletin of the World Health Organization.