"Breve Historia de la Guerra Antigua y Medieval"

https://docs.wixstatic.com/ugd/ec84ca_358fa6ac549743588f095bcff4bc201a.pdf?fbclid=IwAR0Ef03Sjmr3wo8hrKHTroAOZjqeOETTb0cWc0zbm3rRQV6Ve31cv-40W2A