1. An Electrostatic Method for Collecting Bacteria From Air;Berry;U. S. Pub. Health Rep,1941
2. Sampling Air for Bacterial Content;Luckiesh;Gen. Elect. Rev,1941
3. A Simple Device for Sampling Air-Borne Bacteria;Hollander;U. S. Pub. Health Rep,1939
4. II. Acid Formation in Electric Precipitators;Hazard;J. Ind. Hyg,1932
5. A Slit Sampler for Collecting and Counting Air-Borne Bacteria;Bourdillon;Jour. Hyg,1941