@book{11308,
	author = {Laat, J.AP.M.de , Smoorenburg, G.F.},
	title = {Statistical Examination of Heairng Loss due to Shooting Noise and Industrial Noise and Consequences for Screening Audiometry wit Fixed Frequencies},
	publisher = {Instituut Voo Zintuigfysiologie},
	year = {1981}
}