TY  - GEN
AU  - Callen , Jeffrey P. ;ed.
TI  - The medical clinics of north America Vol - 73: cutaneous manifestations of collagen vascular diseases and related disorders
U1  - 616.77 
PY  - 1989///
CY  - Philadelphia
PB  - W.B.Saunders 
KW  - COLLAGEN- DISEASES
ER  -