1. Search engines specialized in science and technology

GetInfo , getinfo.de/app [science and technology]:

• science portal of the TIB ( Technische Informationsbibliothek in Hanover), whose mission is to provide information on technology and science to the research and industrial sectors;

• access to over 135 million scientific resources, including TIB collections and external resources.

TechXtra , www.techxtra.ac.uk [engineering sciences, mathematics, computer science]:

• an initiative of Heriot Watt University in Edinburgh;

• search through 5 million documents in the fields of...