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	1.	No cover image available No cover image available Echo sounding experiments on fish by Crushing Richardson Material type: Text; Format: print ; Literary form: Not fiction Publication details: 1958 Availability: Not available: CIFT Library: Withdrawn (1). Add to cart (remove)
	2.	No cover image available No cover image available Interpretation of echo traces by Crushing Material type: Text; Format: print ; Literary form: Not fiction Publication details: 1955 Availability: Not available: CIFT Library: Withdrawn (1). Add to cart (remove)
	3.	No cover image available No cover image available Echo sounding experiments on fish by Crushing Richardson Material type: Text; Format: print ; Literary form: Not fiction Publication details: Availability: Not available: CIFT Library: Withdrawn (1). Add to cart (remove)
	4.	No cover image available No cover image available Triple frequency echo sounder by Crushing Richardson Material type: Text; Format: print ; Literary form: Not fiction Publication details: 1955 Availability: Not available: CIFT Library: Withdrawn (1). Add to cart (remove)

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