Pedro Richter Prada ( born January 4 , 1921 ) is a Peruvian politician who was the prime minister of Peru from 31 January 1979 until 28 July 1980 .
Pedro Richter Prada ( born January 4 , 1921 ) is a Peruvian politician . Prada was the Prime Minister of Peru from 31 January 1979 to 28 July 1980 .