Goodreads Choice Awards 2025

Join the Goodreads Author Program

Are you R. Iengo, author of the books below?
Non-Perturbative Field Theory and Qcd by R. Iengo String Theory and Quantum Gravity by Michael B. Green Superstrings, Unified Theories and Cosmology 1987 by Giuseppe Furlan Superstrings, Unified Theories and Cosmology 1987 by Giuseppe Furlan


To join the author program as R. Iengo, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads