Ewald, G. (1962). Die Psoriasis arthropathica.
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Kua rahua te tārua ki te papatopenga
Tohutoru Kātū Chicago (17th ed.)
Ewald, Gisela. Die Psoriasis Arthropathica. Saarbrücken, 1962.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Ewald, Gisela. Die Psoriasis Arthropathica. 1962.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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