ACTA HISTORICA SCIMTIARUM NATURALIUM MKDICINALIUM , vol. 31 524,193 NIELSEN HARALD Ancient ophthalmological agents. A pharmaco-historical study of the collyria and seals for collyria used during Roman antiquity, as well as of the most frequent components of the collyria. Transl. from the Danish by Lars Me. Bride. Odense 1974 University Press 8° s. 116, nlb. 1, ilustr. Acta Historica Scientiarum Haturalium et Medicinalium, vol. 31.