det kgl. bibliotek er danmarks nationale bibliotek. vi er optaget af at bevare og formidle kulturarv og sikre viden til uddannelse, forskning, oplysning og oplevelse. et bredt publikum besøger hver dag vores mange betjeningssteder.

central and eastern european online library - cee journals, documents, articles, periodicals, books available online for download, zeitschrfitendatenbank, online zeitschriften, online zeitschriftendatenbank

search the spie digital library, the world's largest collection of optics and photonics peer-reviewed applied research. subscriptions and open access content available.

asce library is your platform for the latest in civil engineering practice and research. this core collection covers all areas of civil engineering including structures, geotechnics, environment and water resources, construction, transportation and urban development, coasts, oceans, ports, and rivers, architecture, and engineering mechanics. asce’s scholarly publications include books, peer-reviewed journals, conference proceedings, and magazines.

access 160+ million publications and connect with 25+ million researchers. join for free and gain visibility by uploading your research.

mdpi is a publisher of peer-reviewed, open access journals since its establishment in 1996.