There are a few different ways to mail merge more than one page per record. One way is to use a mail merge add-in, such as Easy Mail Merge. This add-in provides a way to insert a mail merge field that will expand to include the desired number of pages.
Another way is to use a macro. macros can be written to loop through the records in the data source, creating a new document for each record and inserting the appropriate data on each page.
Finally, some word processors have the ability to do a mail merge from a database or spreadsheet. This built-in functionality might provide the ability to print more than one page per record.