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2. American Conference of Governmental Industrial Hygienists (ACGIH) (1978): “Air Sampling Instruments for Evaluation of Atmospheric Contaminants”. Part V: Discussions and Descriptions of Direct Reading Instruments. ACGIH: Cincinnati. [2]
3. (1980): Grain dust and health: State of the art. In (eds): “Occupational Pulmonary Disease, Focus on Grain Dust and Health.” New York: Academic Press, pp 189–200. [4]
4. Improved techniques for sampling airborne fungal particles in highly contaminated environments.