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Saenz, A. C ,  Inter-Regional Seminar on the Methodology and Co-ordination of Epidemiological Surveillance of Communicable Diseases (1969:Liblice) ,  World Health Organization ,  [Surveillance of yellow fever / A.C. Saenz]

Cockburn, W. Chas ,  Inter-Regional Seminar on methods of Epidemiological Surveillance (1970:Prague) ,  World Health Organization ,  [Surveillance of yellow fever / W. Chas. Cockburn]

Soper, Fred L. ,  World Health Organization ,  [Aedes aegypti and yellow fever: seminar on the ecology, biology, control and eradication of aedes aegypti, Geneva, 16-20 August 1965]

Saenz, A. C ,  Inter-Regional Seminar on the Methodology and Co-ordination of Epidemiological Surveillance of Communicable Diseases (1969:Liblice) ,  World Health Organization ,  [Surveillance of yellow fever / A.C. Saenz]

Cockburn, W. Chas ,  Inter-Regional Seminar on methods of Epidemiological Surveillance (1970:Prague) ,  World Health Organization ,  [Surveillance of yellow fever / W. Chas. Cockburn]

Soper, Fred L. ,  World Health Organization ,  [Aedes aegypti and yellow fever: seminar on the ecology, biology, control and eradication of aedes aegypti, Geneva, 16-20 August 1965]