@book{17794,
	author = {Simojoki, Heikki Juhani,},
	title = {The history of geophysics in Finland :},
	publisher = {Societas Scientiarum Fennica,},
	year = {1978.},
	series = {The History of learning and science in Finland 1828-1918 ;},
	address = {Helsinki :}
}