Rock art & ritual : mindscapes of prehistory

von Smith, Brian A.
Stroud : Amberley, 2011.
Umfang/Format: 159 p. : ill. (some col.) ; 25 cm.

Northumberland's prehistoric rock carvings : a mystery explained

von Beckensall, Stan
Rothbury, Northumberland : Pendulum Publications, 1983.
Umfang/Format: 237 p., [3] p. of plates : ill. ; 25 cm.