Pan American Sanitary Conference 1947 : Caracas, Venezuela) creator text conference publication ve Caracas Editorial Grafolit 1946- 1946 9999 monographic spa

print

v. <2, 6, 12-14, 16, 19, 21-29 > illus. 24 cm. Public health Congresses RA422 .P25 1947b 614.06387 med47003118 DLC 851129 20260227111607.0 med47003118