@book{19029,
	author = {Guppy, Eileen M.},
	title = {Chemical analyses of igneous rocks, metamorphic rocks and minerals, 1931-1954 /},
	publisher = {H.M. Stationery Off.,},
	year = {1956.},
	series = {Memoirs of the Geological Survey, Great Britain},
	address = {London,}
}