Ah yes, so it does. However, the book says "An example of a ramjet powered SAM was the Krug missile (NATO reporting name SA-4) of the former Soviet Union. The use of a ramjet gave the Krug an exceptionally long operational range - almost 800km!"

So, you're probably gonna want to steer well clear of "Surface-to-Air Missiles: Part of the Weapons of War Series" by Andrew May. Damn Wikipedia scientist is what he appears to be.