For technical advice, articles, an extensive bibliography, web links and much more relating to the use of natural stone, visit:
resource
n. a supply or source of aid or support; something resorted to in time of need.

WCS are to start, in September, a phased program of conservatio
n at Hertford College, Oxford. The work focuses on the Old Quad (pictured right), incorporating the lodge, chapel, library and Hart Hall: architecture dating from the 16th through to the end of the 19th century. Both the external, and quadrangle elevations are to be conserved.