Dunn, T.C. (ed) (1980). The Magnesian Limestone of Durham County. Durham County Conservation Trust.
Dunn, T.C. (ed) (1980). The Magnesian Limestone of Durham County. Durham County Conservation Trust. 78pp. PB, perfect bound A4 format. Clean, slightly worn. Includes found enclosures: Angel of the North postcard and 1895 facsimile Godfrey Edition OS 1:2500 map of the Angel of N’s position. All in good condition.