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	1.	Deterring effects of 8-45 kHz tone pulses on harbour seals (Phoca vitulina) in a large pool. [electronic resource] by Kastelein, Ronald A van der Heul, Sander Terhune, John M Verboom, Willem C Triesscheijn, Rob J V Producer: 20070109 In: Marine environmental research vol. 62 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	The influence of underwater data transmission sounds on the displacement behaviour of captive harbour seals (Phoca vitulina). [electronic resource] by Kastelein, Ronald A van der Heul, Sander Verboom, Willem C Triesscheijn, Rob J V Jennings, Nancy V Producer: 20060228 In: Marine environmental research vol. 61 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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