@book{HawkesWoolley, author = {Hawkes, J. and Woolley, L.}, title = {History of mankind. Vol. 1. Prehistoric and the beginnings of civilization, New York (Harper \& Row) 1963.}, language = {en} } @book{Hawkes, author = {Hawkes, J.}, title = {History of Mankind. Cultural and Scientific Development. Volume One, Part One (Prehistory. Under the Auspices of UNESCO. New York (Mentor) 1963.}, language = {en} }