@book{29523,
	author = {Welch, F. B. A. and Trotter, F. M.},
	title = {Geology of the country around Monmouth and Chepstow},
	publisher = {H. M. Stationery Off.,},
	year = {1960 [i.e. 1961]},
	series = {Memoirs of the Geological Survey of Great Britain: England and Wales},
	address = {London,},
	note = {At head of title: Dept. of Scientific and Industrial Research.}
}