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	1.	Emission and deposition of petrol engine exhaust Pb--I. Deposition of exhaust Pb to plant and soil surfaces. [electronic resource] by Little, P Wiffen, R D Producer: 19771028 In: Atmospheric environment vol. 11 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	THE EFFICIENCY OF MEMBRANE FILTERS. [electronic resource] by MEGAW, W J WIFFEN, R D Producer: 19961201 In: Air and water pollution vol. 7 Availability: No items available. Save to lists Add to cart (remove)
	3.	Alpha track autoradiography of submicron aerosol particles with the electron microscope. [electronic resource] by Heard, M J Wiffen, R D Producer: 19681106 In: Nature vol. 219 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Electron microscopy of natural aerosols and the identification of particulate ammonium sulphate. [electronic resource] by Heard, M J Wiffen, R D Producer: 19690917 In: Atmospheric environment vol. 3 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	An automatic device for continuous sampling of the atmospheric aerosol for electron microscopy. [electronic resource] by Heard, M J Wiffen, R D Producer: 19720808 In: Atmospheric environment vol. 6 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)