Robert Charles Kerman (December 16, 1947 – December 27, 2018), also known as R. Bolla, was an American actor who had a pornographic acting career during what is considered to be the "golden age" period of the porn film industry during the mid-1970s to the early/mid-1980s. As Bolla, he appeared in well over 100 pornographic films, most famously Debbie Does Dallas (1978). He was one of few adult performers to have an appreciable mainstream acting career, with a leading role as Professor Harold Monroe in the controversial horror film Cannibal Holocaust (1980). (Via Wikipedia)