SPIE Digital libraryThis collection of e-books on optics and photonics provides access to all SPIE books from 1968–end 2013 (~180 titles) including reference works; texts, and handbooks; tutorial texts at both introductory and intermediate levels, as well as field guides to use in the lab and in the field. SPIE is an international not-for-profit society advancing an interdisciplinary approach to the science and app.