Schick, Kathy Diane. Making silent stones speak Kathy D. Schick and Nicholas Toth. - London Weidenfeld and Nicolson 1994. - 351 p. ISBN: 0297814524 LCCN: gb 94074927 Nat. Bib. No.: GB94-74927 Subjects--Index Terms: Humans Evolution LC Class. No.: GN799 / .T6 S35 1994 Dewey Class. No.: 573.2