This is an HTML version of Petri Net Theory and the Modeling of Systems It has been published. It should be referred to as:
James L. Peterson, Petri Net Theory and the Modelling of Systems, Prentice-Hall, Englewood Cliffs, New Jersey, (April 1981), 290 pages. Translated into Russian and Japanese.
This version does not have the figures that are associated with the printed version. I expect to scan those in, but have not had an opportunity to do so yet (September 1998).