Postscript ot vitamin A acid therapy for acne vulgaris
1974 ◽
Vol 67
(6)
◽
pp. 683-687
◽
1974 ◽
Vol 1
(5)
◽
pp. 191-200
◽
1969 ◽
Vol 99
(4)
◽
pp. 469-476
◽
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