Horst de la Croix. Military Considerations in City Planning: Fortifications. George Braziller: NY 1972 Hardcover with DJ. Good Octavo with clipped and wear to DJ 128pp 

" Croix presents a survey of the history of fortifications since ancient times, relates the science of siege warfare to the state of engineering of its time, and theorizes on the relation of fortification to social and political institutions."