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	1.	An investigation of the auto-kinetic effect employing an after-image. [electronic resource] by Piggins, D J Producer: 19660409 In: The British journal of physiological optics vol. 22 Availability: No items available. Save to lists Add to cart (remove)
	2.	A possible function of centrifugal fibres to the human retina. [electronic resource] by Piggins, D J Producer: 19671215 In: The British journal of physiological optics vol. 23 Availability: No items available. Save to lists Add to cart (remove)
	3.	Refraction of the harp seal, Pagophilus groenlandicus (Erxleben 1777). [electronic resource] by Piggins, D J Producer: 19700807 In: Nature vol. 227 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Another method of objectively determining visual acuity. [electronic resource] by Piggins, D J Producer: 19691021 In: The British journal of physiological optics vol. 24 Availability: No items available. Save to lists Add to cart (remove)
	5.	Autokinesis or apparent movement produced by heterophoria--a note. [electronic resource] by Piggins, D J Producer: 19680215 In: American journal of optometry and archives of American Academy of Optometry vol. 44 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	AUTOKINESIS WITH AN AFTER-IMAGE. [electronic resource] by PIGGINS, D J Producer: 19961201 In: The American journal of psychology vol. 78 Availability: No items available. Save to lists Add to cart (remove)
	7.	Thyroid feeding of salmon parr. [electronic resource] by PIGGINS, D J Producer: 19981101 In: Nature vol. 195 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Fragmentation of a geometrical figure viewed under intermittent illumination. [electronic resource] by Piggins, D J Producer: 19700910 In: Nature vol. 227 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Fragmentation of a prolonged, structured afterimage viewed by naive observers. [electronic resource] by Piggins, D J Producer: 19701030 In: The American journal of psychology vol. 81 Availability: No items available. Save to lists Add to cart (remove)
	10.	A COMPARISON OF THE BEHAVIOUR OF GEOMETRICAL SHAPES WHEN VIEWED UNDER CONDITIONS OF STEADY FIXATION, AND WITH APPARATUS FOR PRODUCING A STABILISED RETINAL IMAGE. [electronic resource] by EVANS, C R PIGGINS, D J Producer: 19961201 In: The British journal of physiological optics vol. 20 Availability: No items available. Save to lists Add to cart (remove)
	11.	Role of retinal image motion in evoking the McCollough effect. [electronic resource] by Piggins, D J Leppmann, P K Producer: 19740108 In: Nature: New biology vol. 245 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	12.	Stabilized images, steadily fixated figures, and prolonged after-images. [electronic resource] by MacKinnon, G E Forde, J Piggins, D J Producer: 19690904 In: Canadian journal of psychology vol. 23 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	13.	The influence of thyroid powder and thyroxine upon the growth of rainbow trout (Salmo gairdnerii). [electronic resource] by BARRINGTON, E J BARRON, N PIGGINS, D J Producer: 19981101 In: General and comparative endocrinology vol. 1 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	14.	Colour, colour saturation, and pattern induced by intermittent illumination: an initial study. [electronic resource] by Piggins, D J Kingham, J R Holmes, S M Producer: 19750703 In: The British journal of physiological optics vol. 27 Availability: No items available. Save to lists Add to cart (remove)
	15.	Effects of alcohol on velocity perception: I. Stimulus velocity and change in performance over time. [electronic resource] by McNamee, J E Tong, J E Piggins, D J Producer: 19810513 In: Perceptual and motor skills vol. 51 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	16.	Apparent height of a stereokinetic cone is decreased by departure from circularity. [electronic resource] by Wilson, J A Robinson, J O Piggins, D J Producer: 19870330 In: Perception vol. 15 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	17.	Wobble cones and wobble holes: the stereokinetic effect revisited. [electronic resource] by Wilson, J A Robinson, J O Piggins, D J Producer: 19840215 In: Perception vol. 12 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	18.	Shape, height and angular movement in stereokinesis. [electronic resource] by Robinson, J O Piggins, D J Wilson, J A Producer: 19861009 In: Perception vol. 14 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	19.	The effect of visual pattern complexity of feeders on food consumption of laying hens. [electronic resource] by Hurnik, J F Piggins, D J Reinhart, B S Summers, J D Producer: 19740516 In: British poultry science vol. 15 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)