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		No cover image available Introduction to medical biometry and statistics by Pearl,Raymond Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Philadelphia and London W.B. Saunders Company 1923 Availability: Not available: Library National Museum Colombo - Sri Lanka: Damaged (1). Place hold Add to cart (remove)
		No cover image available Studies in human biology by Pearl,Raymond Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Baltimore Williams and Wilkins company 1924 Availability: Not available: Library National Museum Colombo - Sri Lanka: Damaged (1). Place hold Add to cart (remove)
		No cover image available Variation and differentiation in ceratophyllum by Pearl,Raymond Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington Carnegie institution of Washington 1907 Availability: Not available: Library National Museum Colombo - Sri Lanka: Damaged (1). Place hold Add to cart (remove)
		No cover image available Variation and correlation in the crayfish by Pearl,Raymond and Clawson Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington Carnegie institution of Washington 1907 Availability: Not available: Library National Museum Colombo - Sri Lanka: Damaged (1). Place hold Add to cart (remove)

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