@book{Murrill1981-ew, author = "R. I. Murrill", title = "Petralona man: A descriptive and comparative study, with new important information on Rhodesian man", year = 1981, booktitle = "Petralona man: A descriptive and comparative study, with new important information on Rhodesian man", publisher = "Charles C Thomas Pub Limited, Springfield IL", isbn = "039804550X" }