On Emmetropia and Ametropia (Part 1 of 4).Published in:Ophthalmologica, 1961, v. 142, n. S1, p. 1, doi. 10.1159/000304181By:van Alphen, G.W.H.M.Publication type:Article
Acknowledgement.Published in:Ophthalmologica, 1961, v. 142, n. S1, p. IV, doi. 10.1159/000304183Publication type:Article
Contents, Vol. 142, Supplement 1, 1961.Published in:Ophthalmologica, 1961, v. 142, n. S1, p. I, doi. 10.1159/000304182Publication type:Article