1. Ragweed Survey in Quebec for 1949;Campagna,1950
2. Techniques for Appraising Air-borne Populations of Microorganisms, Pollen and Insects;Committee of Apparatus in Aerobiology;Phytopathology,1941
3. The Pollen Content of the Air in North America;Durham;J. Allergy,1935
4. Evaluation of the Ragweed Hayfever Resort Areas of North America;Durham;J. Allergy,1937
5. The Volumetric Incidence of Atmospheric Allergens. II. Simultaneous Measurements by Volumetric and Gravity Slide Methods;Durham;J. Allergy,1944