TY  - RPRT
TI  - [Changes in the lungs in progressive systemic scleroderma].
AU  - O Georgiev
AU  - Kh Marinov
AU  - R Rashkov
AU  - P Shoshkov
PY  - 1991
UR  - https://pubmed.ncbi.nlm.nih.gov/1891899/
ID  - 1891899
ER  -