1. Hay Fever Pollen Counts and Some Weather Effects;Dingle;Bull. Am. Meteor. Soc,1957
2. Atmospheric Pollution by Aeroallergens;Sheldon;Progress Report No. 3, University of Michigan Engineering Research Institute, Report 2421-3-P,1959
3. Field Evaluation of Ragweed Pollen Samplers;Ogden;J. Allergy,1960
4. The Roto-rod Sampler;Aerosol Laboratory, Stanford University,1957
5. High-Efficiency Pollen Samplers for Use in Clinical Allergy;Harrington;J. Allergy,1959