How many movies have Kanagal Prabhakar Shastry and M. Ranga Rao collaborated on?

They have worked on 3 movies together! Their first movie together was Sakshathkara (1971) while their highest rated movie together was Edakallu Guddada Mele (1973). They have not worked together since Ranganayaki (1981). They are most known for their drama films together.