A preprint is a draft of a scientific paper that has not yet been published in a peer-reviewed scientific journal.
 
http://en.wikipedia.org/wiki/Preprint
 
A few example of preprint servers in other disciplines are:-
 
UK e-print archive mirror
http://xxx.soton.ac.uk/
 
Open Archives Initiative
http://www.openarchives.org/
 
PuMed Central
http://www.pumedcentral.nih.gov/
 
American Mathematical Society Preprint Server
http://www.ams.org/preprints/
 
CERN preprint Server
http://preprints.cern.ch
 
Chemical Physics Preprint Database
http://www.chem.brown.edu/chem-ph.html
 
Chemistry Preprint Server
http://www.chemweb.com/preprint
 
Economics Working paper Archive
http://econwpa.wustl.edu/wpawelcome.html
 
SISSA preprint server
http://babbage.sissa.it/
 
High Energy Physics Preprint Database
http://wwwspires.slac.stanford.edu/find/hep
 
Nitride Semiconductor Research preprint server
http://nsr.mij.mrs.org/preprints/
 
Clinical Medicine and Health
http://clinmed.netprints.org/
 
Department of Energy's preprint Network
http://www.osti.gov/preprint/
 
Theoretical Chemistry preprints
http://www.chemie.uniregensburg.de/pub/preprint/GENINFO.html
 
Regards,
S.Sripriya
 


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