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Open Access Journals Directory of Open Access Journals (DOAJ) CSIR-NISCAIR Journals Indian Academy of Science Indian Council of Medical Research Journals Indian National Science Academy Indian Medlars Centre MedInd journals Sankhya: the Indian Journal of Statistics E-Print Archives ADS SAO/NASA Astrophysics Data System AgEcon Search ArXiv.org CERN Document Server CogPrints Cryptology ePrint Archive ECS EPrints Repository E-prints Library and Information Science (E-LIS) Mathematical Physics Preprint Archive Open Archive HAL Organic Eprints PhilSci-Archive RePEc (Research Papers in Economics) ViXra Indian Open Access Repositories CSIR Central Institutional Repository at Department of Biotechnology (DBT) Institutional Repository at Department of Science and Technology (DST) Science Central [Open Archive IR Harvester for DST and DBT] CSIR-Indian Institute of Chemical Biology CSIR-NAL Institutional Repository Indian Institue of Astrophysics Digital Repository IIT Bombay Repository IIT Gandhinagar Repository Indian Institute of Management Kozhikode Indian Institute of Science, Bangalore National Institute of Technology (NIT) Rourkela National Physical Laboratory (NPL) RRI Digital Repository Open Research Data Repository Data.gov.in EarthChem European Variation Archive (EVA) NASA Global Change Master Directory (GCMD) OpenAIRE Re3data.org UN Resources UNESCO: Open Access Publications UNDP Projects World Bank: Open Knowledge Repository Worldwide Protein Data Bank (wwPDB) Open Textbooks Directory of Open Access Books Open SUNY Textbooks Theses and dissertations EBSCO Open Dissertations NDLTD: Networked Digital Library of Theses and Dissertations  Open Access Theses and Dissertations (OATD)  PQDT OPEN: ProQuest Digital Theses  ShodhGanga, India  Online Patent Databases Espacenet Patent Search FreePatentsOnline (FPO) Google Patents Indian Patent Search (IPAIRS) SureChEMBL US Patent and Trademark Office (PTO) Subject Gateways Chemdex: the Directory of Chemistry ChemWeb: a Chemistry Portal Central to Science IndiaBioscience.org Vifamath: the Virtual Library of Mathematics TechXtra Wester Water Digital Library World Library of Science WorldWideScience.org WWW Virtual Library Partial Open Access Elsvevier Open Access Royal Society Open Science RSC Gold Open Access SAGE Open Springer Open Access Journals Taylor and Francis Open Access Wiley Open Access FREE Printable Books for Early Reading 2022