Van Erp, I F [An unusual type of porokeratosis]. [electronic resource] - Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete Mar 1969 - 130-2 p. digital Publication Type: Journal Article ISSN: 0017-8470 Subjects--Topical Terms: FemaleHumansKeratosis--diagnosisMiddle AgedPhotosensitivity Disorders--complications