Can anyone suggest a source for implementing a _MAP_ package?

[bigbroth@cathedral.cerc.wvu.wvnet.edu (James M. Coleman)]

Please send replies to UN023343@WVNVMS.WVNET.EDU.  I am using a friend's
account.

One of my classes requires that I find info on the theory and implementation
of a _MAP_.  The _MAP_ theory will be later used in creating a _MAP_ package.

_MAP_ refers to the mathematical definition of map -- 1 to 1, 1 to many, etc.

If any one has recently read an article or text on the subject please send
me mail.

                                Thank you
                                Shane Saddler
                                UN023343@WVNVMS.WVNET.EDU