Online books

• Knovels Answers for Science and Engineering . Tools include Unit Converter and Periodic Table and Data Search which retrieves numeric and other tabular data contained in Knovel's interactive graphs, equations and tables.
• Safari Technical Books Online include books published by O'Reilly and other IT publishers.
• CRCnetBASE provides access to the technical and scientific books published by CRC Press

• STATnetBASE.  This online library meets the needs of statisticians and researchers employing statistical science across a wide range of disciplines. From Frequentist to Bayesian, biostatistics to finance, this fully searchable collection is the perfect tool for any size analysis on all sorts of data.