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	1.	No cover image available Prisms and lenses / by Jerome Sydney Meyer ; illustrated by John Polgreen by Meyer, Jerome Sydney, 1895- Polgreen, John [ill] Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Exeter : Wheaton, 1963 Availability: Items available for loan: National Library of India (1)Call number: Child Divn. 535 M 575. Place hold Request article Save to lists
	2.	No cover image available Light, lenses and colour / illustrated by Burgess Sharrocks by Sharrocks, Burgess [ill.] Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: London : W & R Chambers, 1961 Availability: Items available for loan: National Library of India (1)Call number: E 535 L 625. Place hold Request article Save to lists

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