Also note, as mentioned on the GTRS search page, that just entering a search term in the query box
without restricting it to any specific fields will search for that term in the Title, Author, Abstract, and Key
Words fields.

Examples of searches in the GTRS database:

1)    You just want to do a general search for the term "atmosphere".
            atmosphere

        By just entering 'atmosphere' into the query box the database actually performs a search that looks
        like this:
            ti=atmosphere OR au=atmosphere OR ab=atmosphere OR kw=atmosphere

2)    You want to do a general search of documents from 1995 with the term "atmosphere" in them.
            pd=1995 AND atmosphere

3)    You want to find all documents written in 1996 by Fred Espenak.
            pd=1996 AND au="Fred Espenak"

4)    You want to find all documents written in 1996 by Fred Espenak or Benjamin Kobler.
            pd=1996 AND au="Fred Espenak" OR au="Benjamin Kobler"

5)    You want to find all documents written in 1996 that were not written by Fred Espenak.
            pd=1996 NOT au="Fred Espenak"

6)    You want to search for document #CP-3333 by it's document number and you're not sure if it is the
        NASA Report Number you're searching for or the Performing Organization Report Number.
            nn="CP-3333" OR pn="CP-3333"

        The double quotes must be included or the '-' would make the search fail.