There's also Fundamentals of Astrodynamics https://www.amazon.com/Fundamentals-Astrodynamics-Second-Dover-Physics/dp/0486497046 https://www.amazon.com/Fundamen

There's also Fundamentals of Astrodynamics https://www.amazon.com/Fundamentals-Astrodynamics-Second-Dover-Physics/dp/0486497046 https://www.amazon.com/Fundamentals-Astrodynamics-Second-Dov... Which builds up from first principles a ballistic missile defence system. Always useful to have.