Down to earth : one hundred and fifty years of the British Geological Survey / H.E. Wilson. Wilson, H. E. (Harold E.) British Geological Survey History. QE61 .W55 1985 554.1072041 19 WID "Commemorating the one hundred and fiftieth anniversary of the Geological Survey." Includes bibliographical references. Edinburgh : Scottish Academic Press, c1985. c1985. 1985 Text 189 p. : eng