Melhores portais de periódicos com acesso gratuito

FONTE: http://repositories.webometrics.info/topportals_es.asp?offset=0
JANEIRO 2012

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			POSICIÓN
RANKING MUNDIAL	PORTAL	PAÍS	TAMAÑO	VISIBILIDAD	FICHEROS RICOS	SCHOLAR
1	Scientific Electronic Library Online Brazil SciELO Brazil		2	1	3	3
2	Redalyc		30	9	1	5
3	HAL Hyper Article en Ligne		5	10	2	7
4	Revues.org		7	3	29	10
5	Berkeley Electronic Press Bepress		22	4	26	8
6	Scientific Electronic Library Online Chile SciELO Chile		35	8	9	11
7	China National Knowledge Infrastructure		1	7	54	1
8	SciELO Public Health		4	14	10	14
9	Portal of scientific Journals of Croatia Hrcak		25	12	17	6
10	DiVA Digitala Vetenskapliga Arkivet Academic Archive On-line		3	2	44	9
11	Scientific Electronic Library Online España SciELO España		6	15	13	12
12	National Library of Finland Dspace Services		14	13	11	26
13	DIALNET		8	5	44	2
14	Hungarian Electronic Library		18	6	14	42
15	Thèses en Ligne TEL		38	16	5	18
16	INIST I-Revues		24	18	7	24
17	Scientific Electronic Library Online Argentina SciELO Argentina		39	17	15	16
18	Scientific Electronic Library Online Cuba SciELO Cuba		15	22	25	15
19	KoreaMed Synapse		28	25	12	17
20	Portal de Revistas Científicas de la Universidad Complutense de Madrid		32	19	21	25
21	PERSEE Périodiques Scientifiques en Édition Électronique		19	11	47	4
22	Theseus: Digital collections of Finnish Universities of Applied Sciences		13	34	4	13
23	Scientific Electronic Library Online Mexico SciELO México		9	28	28	21
24	Tesis Doctorals en Xarxa TDX		12	35	6	28
25	National Institute of Science Communication and Information Resources Online Periodical Repository		26	31	16	23
26	Flacso Andes dSpace		23	29	20	35
27	Scientific Electronic Library Online Perú SciELO Perú		45	26	24	29
28	Diposit de la Recerca de Catalunya		31	30	22	38
29	Iowa Publications Online		48	20	18	46
30	RACO Revistes Catalanes amb Accés Obert		16	23	49	22
31	Scientific Electronic Library Online South Africa SciELO South Africa		41	36	30	32
32	State Library of Massachusetts Electronic Repository		29	33	8	51
33	Illinois Digital Archives		11	27	34	51
34	Revistas Científicas del CSIC		37	44	36	19
35	Scientific Electronic Library Online Uruguay SciELO Uruguay		46	37	33	34
36	Hemeroteca Científica Catalana		36	45	39	20
37	Alaskas Digital Archives		20	24	54	51
38	Association for Learning Technology Repository		56	39	35	44
39	Journals@UrMEL		34	32	51	50
40	Scientific Electronic Library Online Costa Rica SciELO Costa Rica		27	49	32	31
41	Online Archive of California		10	41	54	49
42	Afganistan Digital Library		50	38	42	51
43	Repositorio Institucional de Asturias		54	46	38	45
44	Université d'Ottawa Recherche University of Ottawa Research		21	60	19	30
45	Scientific Electronic Library Online Portugal SciELO Portugal		40	59	23	27
46	Brasiliana USP		42	52	27	40
47	Israel Scholar Works		44	42	49	51
48	OpenDepot		49	47	41	47
49	Repositorio de las Revistas Científicas de la Universidad de Costa Rica		52	54	31	36
50	LEO Letteratura Elettronica Online		59	40	54	48
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