National Library of Medicine
Scirus
World Cat
Scientific ResearchAn Academic Publisher
Rapid Library
E Book Browse
BASE- Bielefeld Academic Search Engine
MONASH University (Australia)
Vrije University Brussel
Virginia Common Wealth University (USA)
Utrecht University Library (Netherlands)
University of Ottawa Library (Canada)
Ghent University Library (Belgium)
Columbia University Libraries (USA)
Emory University Libraries (USA)
Indiana University Libraries (USA)
Seattle University A. A. Lemieux Library (USA)
University of Massachusetts, Amherst (USA)
University of Minnesota Libraries, Twin Cities (USA)
University of South Florida Libraries (USA)
University of Texas at Arlington Library (USA)
University of Wisconsin-Madison Libraries (USA)
Concordia University Libraries (Canada)
McGill University Library (Canada)
Simon Fraser University Library (Canada)
University of Alberta Libraries (Canada)
University of Calgary (Canada)
University of Saskatchewan Library (Canada)
University of Toronto Scarborough Library (Canada)
Aalborg University Library (Denmark)
University of Minnesota (USA)
BIOLA UNIVERSITY (USA)
The Open University ( UK)
State Library of New South Wales (Australia)
Imperial College London
University of New Castle (Australia)
Bond University (Australia)
Deakin University Library (Australia)
Griffith University (Australia)
La Trobe University Library (Australia)
Macquarie University Library (Australia)
Southern Cross University ( Australia)
State Library of Victoria (Australia)
UNSW Library (Australia)
University of Adelaide Library (Australia)
UNE Library (Australia)
UniSA Library (Australia)
UTAS Library (Australia)
UCL Cruciform Library (London)
NYC Health Sciences Libraries (New York)
University of New Brunswick Libraries (Canada)
CURTIN UNIVERSITY (Western Australia)
VRIJE UNIVERSITEIT BRUSSEL
OREGON HEALTH & SCIENCE UNIVERSITY
EVANS LIBRARY FLORIDA INSTITUTE OF TECHNOLOGY
THOMAS LIBRARY WITTENBERG UNIVERSITY
UNIVERSITY LIBRARY THE UNIVERSITY OF TEXAS AT EL PASO
Uni>ersia
Bimpe
SOCIAL SERVICES KNOWLEDGE SCOTLAND
National Research Council Canada
Directory of Research Journal Indexing
Dowling College Library
Tallinna University of Technology
The University of Hong Kong