How many movies have Jamuna and Pendyala Nageswara Rao collaborated on?

They have worked on 4 movies together! Their first movie together was Donga Ramudu (1955) while their highest rated movie together was Ramudu Bheemudu (1964). They have not worked together since Sri Rama Pattabhishekam (1978). They are most known for their drama films together.