The Half Life of Books used in Doctoral Theses on History by Kurukshetra University Kurukshetra and Maharshi Dayanand University, Rohtak in Haryana (1979-2012) .

Abstract

The 14122 citations analyzed were cited in 95 doctoral theses of History awarded in Kurukshetra University, Kurukshetra and MaharshiDayanand University, Rohtak (Haryana) from the period beginning of research in this university up to the end of 2012.In History, the highest number of 36 theses (66.66%) of Kurukshetra University had 201-300 pages majority of theses (51.22%) in MaharshiDayanand University; Rohtakalso had same number of pages.The highest average number of 210.8 per theses in History was during 1979-1983. The forms of cited literature in History,the highest number of 9146 (64.76%) books were cited. There were 957 (6.77%) journals citations in History. Among overall citations, Government Publications 1473 (10.43%), Reports/ archival papers 1304 (9.23%), News paper/Magazine/Poster/Pamphlet 680 (4.81%), Conference/Seminar/Proceedings 166 (1.71%), Theses/ Dissertation 164 (1.17%), Contributed books /interview 130 (0.93%) and Encyclopedia/ Directory/Dictionary 102 (0.73%) were cited in History.The books contributions 93.60 percent citations were produced under single authorship. The half life of books in History is 34.24 years.