This book is now available, in either
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).