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Vutreshni Bolesti|January 1, 1991
[Changes in the lungs in progressive systemic scleroderma]O Georgiev, Kh Marinov, R Rashkov, et al.
Vutreshni Bolesti|January 1, 1988
[Dynamic changes in the functional respiratory indices in chronic obstructive lung disease]Kh Marinov, D Dimitrov, P Shoshkov, et al.
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