Bioengineering

The NTRL provides access to the NTIS (National Technical Information Service) content collection. It contains over 3 million records with over 800,000 full-text reports. The NTRL is updated each week with newly acquired information and recently digitized existing content. It is a convenient and economical means of accessing the most comprehensive library of federally produced scientific and technical information available. Although NTRL is a publicly accessible database, first time users must register.

A searchable digital collection of US governmental agency technical reports.

Defense Technical Information Center, funded by the USA Department of Defense, makes available a free database of unclassified, documents which provide information on the entire spectrum of engineering topics. Many of the documents are technical reports, especially helpful to those interested in very narrow scientific subjects.

System for Information on Grey Literature in Europe, is your open access to 700.000 bibliographical references of grey literature (paper) produced in Europe and allows you to export records and locate the documents.