Ray, Ransingh Nirmalendu National Children's Science congress-2005, Orissa Projects of 13th State Level by Ransingh Nirmalendu Ray - Bhubaneswar Bharat Jan gyan Vigyan Samity 2005 - 272 p. 25 cm. Subjects--Topical Terms: Science Congress; Gratis Dewey Class. No.: 500 / RAY/P