DIAS-STP-00-09 Counting Rank-2 Matroids W.M.B. Dukes This preprint is available for download : Portable Document Format (Size: 196K) Postscript (Size: 320K) To obtain copies of any of the preprints in the archives, please contact us and specify the preprint number(s), author(s), title(s) and number of copies wanted.