@book{16409,
	author = {Molengraaff, G. A. F.,},
	title = {Geologisch onderwijs aan mijnbouwkundigen /},
	publisher = {Brill,},
	year = {2025.},
	series = {Biology - Book Archive pre-2000},
	address = {Leiden ;},
	url = {http://dx.doi.org/10.1163/9789004732513}
}