Jindal, Suresh Kuma वैज्ञानिक अनुसंधान तथा विकास Vaigyanik anusandhan tatha vikas - New Delhi: DESIDOC, 2013 - 280p. ISBN: 978-81-86514-41-2 Subjects--Topical Terms: Science Universal Decimal Class. No.: 5/6 Q3