The NA&SD collection contains NASA technical reports, other material of interest to the NASA mission and NACA holdings from 1915 to date. If you are using a nasa.gov domain computer, you may immediately access publicly available information in this database. Many of the NASA reports are available in PDF for free.
If you would like to access more comprehensive search and retrieval capabilities or access to restricted information, you must register with the Center for Aerospace Information.
Access NA&SD at http://www.sti.nasa.gov/nasaonly Then click on Publicly Available Information.
ADVANCED SEARCH offers you more options.
BROWSE enables you to view variants in spelling and numbers, such as author names and report numbers. Compare this to SEARCH.
SEARCH OPERATORS help you to scale your search request between specific and general search strategies. (All of these words, Any keywords, Exact phrase.)
RESULTS PER PAGE allows you to select the number of citations you want to display. The advanced search mode has the ALL option.
SEARCH HISTORY enables you to narrow or expand any current search with additional terms.
RESULTS SET enables you to SORT.
HELP offers you screen-specific assistance.
USER FEEDBACK offers you a way to ask questions, and is accessible after you logout.