In the left frame, your search and previous parameters are still visible. From the left hand frame you may also start a new search or review your search history. Search History Available only from the Advanced Search mode. Represent an unlimited number of characters within a word, e.g. Represent alternative spellings.
Boolean operators help define the relationships between words or groups of words.
Use To AND Narrow search, and retrieve records containing all of the words it separates. OR Broaden search, and retrieve records containing any of the words it separates. NOT Narrow search, and retrieve records that do not contain the term following it. The format used for authors' names varies from record to record. To narrow the search, add initials or first or other names, e.g. Smith, J .