id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-14073	Line, Maurice B.	Changes in Rank Lists of Serials Over Time: Interlending versus Citation Data (Research Note)	1985-01-01	4	.pdf	application/pdf	1933	92	60	However, one major difference between citations and ILL demands is that citations TABLE 1 Top x titles on lists 100 200 300 400 500 1,000 SIMILARITY OF RANK LISTS OF SERIALS AT THREE-YEAR AND FIVE-YEAR INTERVALS: ILL DATA VERSUS CITATION DATA IDData Serials Requested from Lending Division 1975/1980 1980/1983 (5 years) (3 years) 60 56 54 56 56 56 57 62 61 62 61 60 % of Titles Common to Both Lists Citation Data Science Citation Index 1975/1980 1979/1982 (5 years) (3 years) 88 83 86 88 87 83 95 93 93 91 92 Social Science Citation Index 1977/1982 1979/1982 (5 years) (3 years) 83 78 81 79 80 88 84 87 88 87 To be read as follows: Of the top 100 titles in the 1975 and 1980 ILL rank lists, 60 percent were common to both; of the top 300 titles in the 1979 and 1982 SO rank lists, 93 percent were common to both . are made mainly by authors in academic institutions, whereas ILL demands for se- rials come about equally from academic in- stitutions and from industrial and com- mercial organizations (in fact, both categories accounted for 35 percent of de- mand for serials in another survey carried out in 1983 at the Lending Division). 4 What are the reasons for these large dif- ferences between Lending Division and lSI data?	cache/crl-14073.pdf	txt/crl-14073.txt