Pocket data book 1991 - Dept.Science & Technology New Delhi 1991 - 109pages = India-Department of science & technology Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: p903 Nat. Bib. Agency Control No.: 001:62 IND Subjects--Topical Terms: Engineering & Technology Universal Decimal Class. No.: 001:62