@book{18868,
	author = {Heier, Knut S.},
	title = {Petrology and geochemistry of high-grade metamorphic and igneous rocks on Langøy, northern Norway.},
	publisher = {I kommisjon hos Aschehoug,},
	year = {1960.},
	series = {Norges geologiske undersøkelse,},
	address = {Oslo,},
	note = {Summary in Norwegian.}
}