@book{19101,
	author = {Nederlands Geologisch Mijnbouwkundig Genootschap. and Schieferdecker, A. A. G.,},
	title = {Geological nomenclature /},
	publisher = {J. Noorduijn,},
	year = {1959.},
	address = {Gorinchem,},
	note = {At head of title: Royal Geological and Mining Society of the Netherlands.}
}