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	1.	No cover image available The wonder of light : a picture story of how and why we see / Hyman Ruchlis by Ruchlis, Hyman Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: London : John Murray, c1960 Availability: Items available for loan: National Library of India (1)Call number: J/E 535 R 827. Place hold Request article Save to lists
	2.	No cover image available The wonder of heat energy : a picture story of the vital part heat plays in our world / Hyman Ruchlis ; illustrated by Alice Hirsh by Ruchlis, Hyman Hirsh, Alice, fl.1957- [ill] Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: New York : Harper, 1961 Availability: Items available for loan: National Library of India (1)Call number: J/E 536 R 827. Place hold Request article Save to lists

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