Til, H.P., Woutersen, R.A., Feron, V.J., Hollanders, V.H.M. and Falke, H.E. Two-year drinking-water study of formaldehyde in rats. ###>Til, H.P., Woutersen, R.A., Feron, V.J., Hollanders, V.H.M. et Falke, H.E. Two-year drinking-water study of formaldehyde in rats.