Lump Under Skin Between Cheek And Gum

Two interesting documents: the latest version of "NASA Systems Engineering Handbook" and the report on "systems engineering" in the GPS program

two documents are available online very interesting and quite recent. The first is the 2007 version of" NASA Systems Engineering Handbook "and can be downloaded in pdf format from the archive section and the second is the" GPS Systems Engineering Case Study "published in 2008 by the 'Air Force Center for Systems Engineering ", downloadable from http://www.afit.edu/cse/cases.cfm?case=17&a=detail , which is available in the Archive section.