| Bretnor covers «Vulnerability and the Equations of War,» «Destructive Forces and the Equations of War,» «Time and the Equations of War,» «The Critical Imbalance,» and «The Optimum Response.» |
| Bretnor covers «Vulnerability and the Equations of War,» «Destructive Forces and the Equations of War,» «Time and the Equations of War,» «The Critical Imbalance,» and «The Optimum Response.» |