You can direct that both terms be searched in the same index, or you may choose a different index in which to search each term. You can specify any of the following relationships between the two terms you have entered. AND requires that both of the specified terms be found. OR requires that either of the specified terms be found. AND NOT requires that the first term be found, but not the second term.
YEAR presents the results in chronological order.
This is the default display. It also provides a hypertext link to the full text when this is available on the Web. LONG is an extended representation of the document, including the bibliographical citation, abstract, and several other data elements. If your search was unsuccessful, you will receive an error message explaining why it failed. This form allows you to select a display format to print all saved items from your searches.