ProQuest SciTech Premium Collection This link opens in a new windowThis database combines specialized natural science, technology, and engineering databases into one package. More than 80 million abstracting and index records, with controlled-vocabulary terms. Sources covered include journals, conference proceedings, technical reports, trade journal/newsletter items, patents, books, and more than 12 million indexed tables and figures. More than 4,200 full-text journals. Coverage dates: 1962-present.