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			ප්‍රායෝගික සංඛ්‍යානය නියදි සමීක්ෂණ ක්‍රම by Silva, Stanley Language: Sinhala Publication details: Kottawa Sara Prakasana 1995 Title translated: Prayogika samkyanaya: niyadi samiksana krama. Availability: Items available for loan: Main Library (14)Collection, call number: Lending Collection 519.52 S34, ... Items available for reference: Main Library: Not for loan (1)Collection, call number: Sri Lanka Collection 519.52 S34. Place hold Add to cart (remove)
			No cover image available No cover image available Sampling an introduction for social scientists by Conway, Freda Language: English Publication details: London Allen & Unwin 1967 Availability: Items available for loan: Main Library (1)Collection, call number: Reference Collection 519.52 C55. Place hold Add to cart (remove)
			Survey methods in social investigation by Moser, C.A Kalton, G Edition: 2nd ed. Language: English Publication details: London Heinemann Educational Books 1971 1977 Availability: Items available for loan: Main Library (1)Collection, call number: Reference Collection 300.723 M57. Place hold Add to cart (remove)

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