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	1.		Pollution and health by P. K. Ray by Ray, P.K Material type: Text Publication details: New Delhi Wiley Eastern 1995 Availability: Items available for loan: North Eastern Hill University (5)Call number: 333.7 RAY, ... Place hold Add to cart (remove)
	2.		Down memory lane : reminiscences of a Bengali revolutionary / P.K. Ray. by Ray, P. K Material type: Text; Format: print ; Nature of contents: ; Literary form: Not fiction Publication details: New Delhi : Gian Pub. House, c1990 Availability: Items available for loan: North Eastern Hill University (3)Call number: 954.140350924 RAY, ... Place hold Add to cart (remove)
	3.		Economic Geography : a study of resources P. K. Roy by Ray , P.K Edition: 2001 Material type: Text Publication details: Calcutta New Central Book Agency 2001 Availability: Items available for loan: North Eastern Hill University (1)Call number: 910.133 RAY. Place hold Add to cart (remove)
	4.		Educational technology : technology of instructional design Part-I P. K. S. Ray by Ray, P. K. S Material type: Text Language: English Publication details: New Delhi Dominant Publishers 2015 Online access: Click here to access online Availability: Items available for loan: North Eastern Hill University (1)Call number: 371.33 RAY. Place hold Add to cart (remove)

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