• Keyword
• Greek Keyword
• Title
• Author
• Volume

You can also use the 'Search in' and 'Limit to' Search Options to refine your search further.

Keyword

From the Search page, you can use the Keyword field to search for any word or phrase contained within a document.

There are two ways in which search terms can be entered into the Keyword field. You can:

• browse a list of keywords from which you can select terms to transfer back to the search box.

• type your search terms directly into the Keyword search box. Search terms may consist of either single words or phrases. For example:
  
  
  
  

When searching in the Keyword field, you can use wildcard characters to retrieve documents containing variations on a term. If you choose to search for more than one term, you can also combine them using Boolean and proximity searching.

If you want to search the data by column number, enter the 4 digit column number followed by a letter. The letter refers to the part of the page the text appears. Example: "0022", "0008", or "1255".

Greek Keyword

You can use the Greek Keyword field to search for any Greek word or phrase contained within a document. Use the browse list to select terms to transfer back to the search box. If you select more than one term, OR will automatically be entered.

Title

From the Search page, you can use the Title Keyword field to search for any word or phrase in the title of a document.

There are two ways in which search terms can be entered into the Title Keyword field. You can:

• browse a list of title keywords from which you can select terms to transfer back to the search box.
  
  
• type your search terms directly into the Title Keyword search box. Search terms may consist of either single words or phrases. For example:
  
  
  
  

When searching in the Title Keyword field, you can use wildcard characters to retrieve documents whose titles contain variations on a term. If you choose to search for more than one term, you can also combine them using Boolean and proximity searching.

Author

From the Search page, you can use the Document Author field to search for all documents and divisions of documents written by a specific author or authors.

There are two ways in which search terms can be entered into the Document Author field. You can:

• browse a list of authors from which you can select full author names to transfer back to the search box.
• type your search terms directly into the Document Author search box. Search terms may consist of either single words or phrases which either partly or wholly compose an author's name. For example:
  
  
  
  

When searching in the Document Author field, you can use wildcard characters to retrieve documents written by various authors. If you choose to search for more than one term, you can also combine them using Boolean and proximity searching.

Further details on author names and authorship may be consulted.

Volume

From the Search page, you can use the Volume field to search for all documents within a particular volume, range of volumes or selection of volumes. There are 221 volumes in the Patrologia Latina Database, including four containing indices (218-221). Since the volumes of Migne's printed edition progress chronologically (from the 2nd/3rd century to the 13th century AD), searching by volume also allows you to search by a particular period.

There are two ways in which search terms can be entered into the Volume field. You can:

• browse a list of volume numbers from which you can select terms to transfer back to the search box.
  
  
• type an individual volume number or numbers directly into the Volume search box. For example:
  
  

When searching in the Volume field, you can use wild cards to retrieve documents contained in sequences of volumes. For example:

This search would retrieve all documents in volume 8 as well as all documents in volumes 80 to 89. To further restrict the search to the volume sequence 80 to 89, the NOT operator can be used. For example:

If you choose to search on more than one volume number, you can either enter a hypenated range (8-12) or combine them using Boolean searching.